Dharma · AI Companion

火宅

ādīptāgāra

以燃烧宅舍譬喻三界不安AI-generated

Type PhenomenaDifficulty IntroductoryTruth-level span I · dependent arisingInitial AI estimate · evolves with use

A Contemporary ReadingAI-generated


I. What This Concept Is About

In the Buddhist system of the path to liberation, the 火宅 (ādīptagṛha, "burning house") is not an abstract philosophical metaphor but a panoramic warning about the living condition of sentient beings. Its most essential one-sentence definition is: a Buddhist metaphor for the perilous state in which the 三界 (triloka, the three realms) are filled with afflictions and all manner of suffering — birth, aging, sickness, death — while sentient beings, clinging to the 五欲 (pañca-kāma, the five desires), refuse to seek escape.

To thoroughly understand the 火宅 (ādīptagṛha, "burning house"), one must unpack the rigorous doctrinal structure behind it. The scriptures — such as the 《妙法莲华经》(Saddharma-puṇḍarīka-sūtra, the Lotus Sūtra) and the 《大乘本生心地观经》(Mahāyāna Sūtra of the Contemplation of the Mind-Ground) — analyze the burning house on three mutually reinforcing levels:

1. The Structure of the Burning House: What Are the "Three Realms"?

The 三界 (triloka, the three realms) that the burning house metaphorically represents — namely 欲界 (kāmadhātu, the desire realm), 色界 (rūpadhātu, the form realm), and 无色界 (ārūpyadhātu, the formless realm) — encompasses the entirety of ordinary beings' physical and mental existence.

* External danger: The interior of the burning house is dilapidated and filthy, teeming with poisonous creatures (serpents, vipers, scorpions, centipedes) and ferocious beasts (foxes, wolves, jackals), and further haunted by hosts of evil spirits (yakṣas, hungry ghosts, kumbhāṇḍas, piśācas) fighting and tearing at one another within. This symbolizes the impermanence of the worldly environment, natural and man-made calamities, and the brutal reality of sentient beings jostling and contending for resources. * Internal conflagration: The burning house is described as 「四面一時,其炎俱熾」 ("on all four sides, at once, all its flames blaze") because it is consumed by two kinds of fire simultaneously: the 「fire of afflictions」 (煩惱之火; the three poisons of greed, hatred, and delusion) and the 「fire of aging, sickness, and death」. In the *Contemplation of the Mind-Ground Sūtra*, worldly wealth is likened to 「草木」 ("grass and trees"), while sentient beings' covetous minds are likened to a 「世舍宅」 ("worldly dwelling") — a small flame can burn up grass and trees, and likewise greed ignites immeasurable fires of affliction; when one obtains what one seeks, enjoyment is never enough and craving is never satisfied; when one does not obtain it, the mind burns with vexation.

2. The State of Those Inside the House: Delusion, Numbness, and "Moths Plunging into Fire"

Faced with this decayed, collapsing tower that may give way at any moment, the sentient beings dwelling within it (metaphorically the 「children」 or 「young ones」) present an utterly absurd picture:

* Ignorant and unafraid: Sentient beings, 「young and ignorant,」 are 「unaware and unknowing, unstartled and unafraid, feeling no disgust and seeking no liberation」 regarding the danger around them. * Delighting in play: They instead cling greedily to the five desires and material gains — the 「coarse, inferior forms, sounds, scents, flavors, and tangibles」 — dashing east and west within the burning house, and though they suffer great pain, they do not regard it as a calamity. * Immolating themselves: The *Contemplation of the Mind-Ground Sūtra* uses the simile of 「moths plunging into fire」 (「飛蛾見火光,以愛火故而競入」 — "moths, seeing firelight, race in because of the fire of craving") to expose how sentient beings blindly pursue objects of form and beauty out of craving, unaware that sensual desire has an extremely powerful power to stain and bind, and in the end they are 「burned by the fire and reap all manner of suffering,」 willingly setting themselves ablaze.

3. The Parable of Deliverance: Two Fates in the Scriptures

In the scriptures, the 「elder」 (長者; a metaphor for the Buddhas of the three times and the father of the world) displays two profoundly meaningful contrasts in order to rescue these 「offspring」 trapped in the burning house:

* The Lotus Sūtra's 「expedient of the three carts」 and 「equal gift of the great cart」: The elder knows well that if he were to persuade the young children directly with profound Buddha-wisdom, they could not understand. He therefore sets up an 「expedient means」 (方便法, upāya), proclaiming outside the gate that there are goat carts (a metaphor for the 声闻乘 (śrāvaka-yāna, the vehicle of the hearers), swiftly leaving the three realms and seeking nirvāṇa for oneself), deer carts (a metaphor for the 辟支佛乘 (pratyekabuddha-yāna, the vehicle of the solitary buddhas), cultivating solitary stillness and deeply understanding causes and conditions), and ox carts (a metaphor for the 菩萨乘 (bodhisattva-yāna, the vehicle of the bodhisattvas), seeking all-knowledge and compassionately regarding sentient beings) — precious playthings that entice the children to race out of the burning house. Once the children have escaped to the safe 「open ground」 (露地; the unconditioned ground free from suffering), the elder of immeasurable wealth no longer gives them the small carts, but instead 「with an equal mind, gives each one」 the 「great cart of seven treasures」 (七寶大車; drawn by a white ox and adorned with all jewels — that is, the one Buddha vehicle). This displays the Buddha's compassionate deliverance: 「first hooking with desire, then leading them into Buddha-wisdom.」

* The Mind-Ground Sūtra's tragedy of 「perishing in the burning inner chambers」: This scripture depicts another kind of warning: the great elder entrusts the family estate to a 「foolish son」 deeply attached to the five desires. The foolish son defies his father's teaching, squanders enormous wealth to build a luxurious seven-story jeweled tower, and indulges day and night in the five desires. When a fire breaks out in the neighbor's house and spreads, the foolish son, owing to delusion and hatred, does not flee but instead takes his wife and retainers into the inner chambers, closes the door, and refuses to come out — in the end, they 「all die at once」, falling into the 「three evil destinies」 (三惡道) to endure the torment of burning for countless eons. This sūtra emphasizes that if one does not follow the Buddha's teaching and refuses to 「renounce the world,」 one will ultimately only seal off one's own path of life. To escape the burning house, one must cultivate the holy life (梵行, brahmacarya) and dwell in an 「aranya」 (阿兰若; a solitary place in the mountains and forests), only then can one attain 三昧 (samādhi) and supernormal powers and enter the 「city of pure 涅槃 (nirvāṇa).」

``` 【 The "Burning House of the Three Realms," filled with birth, aging, sickness, death, and the blazing three poisons 】 │ ┌─────────────────────────┴─────────────────────────┐ ▼ ▼ Lotus Sūtra: path of rescue Mind-Ground Sūtra: path of warning ───────────────── ─────────────────── · Inside: children at play, clinging to five desires · Inside: foolish son defies father, builds seven-story tower · Lure: elder's "goat/deer/ox" three-cart expedient · Crisis: fire spreads; fool hides in inner chambers · Outcome: escape to "open ground," · Outcome: "all die at once," fall to equally given "great cart of seven treasures" three evil destinies (the Buddha vehicle) · Liberation: only renunciation; dwell in "aranya," toward nirvāṇa city ```


II. A Walk-Through in Daily Life

We often assume that the 火宅 (ādīptagṛha, "burning house") is some terrifying post-mortem scene or an ancient religious fear. Yet if we map it strictly against the scriptural definition, the modern life we move through every day is precisely a finely packaged "modern burning house."

Let us conduct a rigorous walk-through using a scene with which every contemporary person is deeply familiar — "the late-night phone-scrolling and overtime cycle."

1. "Fire Rising on All Sides": The Modern Manifestation of Aging, Sickness, Death, and Impermanence

* Scriptural mapping: The burning house catches fire on all four sides; the fires of aging, sickness, and death never go out. * Living scene: At 1 a.m., you drag your exhausted body home from work. The thyroid nodules, lumbar disc herniation, and chronic insomnia that quietly appear on your medical report — this is the 「fire of aging, sickness, and death」 scorching your flesh. The anxiety of possible layoffs at any moment and the upheaval of industry change — this is the threat posed by the external environment (the resource competition of ferocious beasts and poisonous insects).

2. "Greed Racing About" and the "Grass-and-Trees Small Fire": Algorithm-Driven Temptation of the Five Desires

* Scriptural mapping: 「Grass and trees」 stand for worldly wealth; the 「worldly dwelling」 stands for covetous desire. When one obtains what one seeks, enjoyment is never enough; when one does not, the mind burns with vexation. Moths, seeing firelight, race in because of the fire of craving. * Living scene: Lying in bed, you know you have to get up early tomorrow, yet you cannot stop your hand from scrolling short videos and shopping apps. * Forms, sounds, scents, flavors, tangibles (the five desires): high-saturation screen colors, stimulating sound effects, exquisitely curated influencer food pushes, the material signifiers that algorithms so carefully promote (luxury watches, mansions, lavish vacations). * Where people commonly mis-map: Many people assume the 「five desires」 refers to extreme, degenerate sensual indulgence. Wrong! The 「coarse, inferior forms, sounds, scents, flavors, and tangibles」 in the scriptures precisely include every stimulus in our daily lives that brings fleeting sensory pleasure. * Moths plunging into fire: The algorithm precisely captures your neurotransmitters (dopamine). The more you scroll, the more anxious you become (the suffering of not getting what you seek); the more anxious you are, the more you want to keep scrolling (obtaining but never being satisfied). This is like moths seeing firelight — knowing full well it will drain their energy, yet unable to resist 「racing in.」

3. "Perishing in the Burning Inner Chambers": Using Higher Consumption to Resist Anxiety

* Scriptural mapping: The foolish son does not follow his father's teaching, but instead builds a luxurious seven-story jeweled tower; when fire breaks out, he hides in the inner chambers, closes the door, and refuses to come out — all die at once. * Living scene: Faced with enormous work pressure and inner emptiness (the suffering of the burning house), the most common coping strategy of modern people is not 「seeking escape」 but 「upgrading consumption」 — buying a more expensive bag, taking on a larger mortgage, going to more distant vacation destinations. This is the modern version of 「building the seven-story jeweled tower.」 When the crisis of life (the fire) spreads, we instead treat these material placebos as a refuge, hiding inside ever higher consumption leverage (the inner chambers) with the door shut. In the end, when an economic storm or health collapse arrives, the entire structure of life collapses in an instant — this is precisely 「all dying at once.」

4. The "Expedient of the Three Carts": Where Contemporary Practice Begins

* Scriptural mapping: The elder lures the children out of the burning house with goat carts, deer carts, and ox carts. * Living scene: You begin to realize you cannot go on like this. You might first try to wean yourself off your phone, practice mindfulness meditation, or start reading scriptures and sitting in meditation. These initial motivations — 「relieving anxiety, improving work efficiency, gaining personal peace」 — are like the 「goat cart」 or 「deer cart」 the elder promises. Though still limited by self-interest, the crucial step is that they get you willing to lift your foot and walk toward the door.


III. Why Contemporary People Need It

Contemporary people live in the most materially abundant, medically advanced era in human history. So why have anxiety disorders, depression, and systemic burnout become the diseases of our time? Because we have turned the 「burning house」 into a 「safe harbor」 — we are even renovating mansions inside the burning house.

1. Breaking the numbness of 「the algorithm as the world」 The essence of contemporary technology (AI, big-data algorithms) is the construction of an extremely refined 「sensory entertainment system.」 It ceaselessly feeds sentient beings the micro-stimuli of 「coarse, inferior forms, sounds, scents, flavors, and tangibles,」 keeping us 「delighting in play, unaware and unknowing」 inside the burning house. The concept of the burning house is an alarm bell: the comfort zone you take for granted is merely a decaying house that is already burning.

2. Redrawing the boundary between 「science and the mind」 Contemporary neuroscience and modern psychology (such as cognitive behavioral therapy and dopamine-circuit research) have revealed in depth how the brain is locked into immediate-reward mechanisms. At the mechanistic level, this confirms what Buddhism calls 「greed racing about」 and the 「power of defiling attachment.」 * *Limit and open question*: It must be stated clearly that scientific research is largely confined to the physiological measurement of neurotransmitters and the cerebral cortex. It can explain 「how dopamine makes people addicted,」 but it cannot resolve the ultimate suffering of birth, aging, sickness, and death, nor can it offer a vision of liberation beyond saṃsāra. Science can help you optimize the ventilation system inside the burning house, but Buddhism tells you — this house itself must be left.

3. Providing a 「framework of awakening」 of the highest scope The concept of the burning house does not drive people to despair; it offers a complete path of liberation: acknowledge the danger of the present situation (知苦, knowing suffering) → see through the illusoriness of the five desires (斷集, cutting off accumulation) → step outside the door with the aid of expedient means (修道, cultivating the path) → finally obtain the perfect great cart of wisdom (證滅, realizing cessation).


IV. Common Misreadings and Clarifications

Misreading One: Reading the 「burning house」 as world-weary, passive, society-avoiding 「pessimism」

* Clarification: This is the most common misunderstanding. The scriptures describe the horrors of the burning house with a purpose that is absolutely not to drive people to despair, but to make them 「awaken.」 The elder in the Lotus Sūtra has long been free from the fire himself; his urgent cries and manifold skillful means are precisely the utmost compassion and active deliverance. True Buddhist renunciation is 「renouncing the mechanism of affliction and suffering,」 not negating life itself. Only when you see clearly that the house is on fire will you move to escape; after fleeing the burning house (the open ground), what awaits you is the vast, gorgeously adorned 「great cart of seven treasures.」 This is an extremely lucid activism.

Misreading Two: Taking the Lotus Sūtra's 「three carts」 as worldly wealth, fame, or reward

* Clarification: Some mistakenly believe that the elder's use of goat carts and deer carts to entice the children is an encouragement to pursue worldly success. Quite the opposite! The 「three carts」 in the sūtra clearly correspond to the vehicles of cultivation (聲聞乘, the śrāvaka vehicle; 緣覺乘, the pratyekabuddha vehicle; 菩薩乘, the bodhisattva vehicle). Worldly wealth, fame, and profit are the 「five desires」 inside the burning house; the 「three carts」 are the instruments of liberation that lead you out the door of the burning house.

Misreading Three: Believing that hiding in worldly happiness (family, career) can keep one safe from the 「fire」

* Clarification: The parable of 「perishing in the burning inner chambers」 in the Mind-Ground Sūtra was set up precisely for this. The foolish son believes that if he brings his wife and servants and hides in the luxurious seven-story tower with the door shut, he will be safe — but the result is exactly the opposite. Worldly fulfillment (health, wealth, family) is extremely fragile in the face of impermanence, birth, aging, sickness, and death. Without the illuminating awareness of wisdom, these 「defense lines of happiness」 often become the 「inner chambers」 that seal off the exits when the fire comes.

Misreading Four: Mistaking the 「expedient means」 (the three carts) for the Buddha 「lying」

* Clarification: The Lotus Sūtra specifically discusses whether the elder's promise of three carts and final gift of the great cart constitutes 「falseness」 (lying). The sūtra states explicitly: the elder, in order to preserve the lives of the children, used expedient means to lure them to safety. This is not lying at all — it is great compassion. For their 「lives」 were saved, and they were given the 「great cart of seven treasures,」 which far exceeded what was promised. In practice, do not cling rigidly to the initial forms of practice. Every method that can guide us to abandon evil, cultivate good, and walk out of the burning house of affliction is the Buddha's painstaking expedient, adapted to circumstances.

Canonical EntryAI-generated

一、 定义与核心要义

「火宅」(梵语:ādīptagṛha)是佛教经典中用以比喻「三界」的经典概念,象征众生所处的世间充满了无尽的苦难、烦恼与危险,而众生却耽著于五欲之中,不求出离。

在《妙法莲华经》(《妙法蓮華經》)中,火宅被明确定义为众生居住的「三界」,经中指出「三界无安,犹如火宅,众苦充满,甚可怖畏」。这座火宅正遭受生老病死、忧悲、苦恼、愚痴、暗蔽以及三毒之火的炽然烧煮。

在《大乘本生心地观经》(《大乘本生心地觀經》)中,世间的舍宅被视为「石火」或「人间微少火」。诸佛世尊将这种因贪欲与生老病死交织、充满无量烦恼的「三界」定义为「火宅」,以此警示众生应对其深生厌恶与患害。

二、 主要阐述

1. 火宅的烦恼之源与惨状

《大乘本生心地观经》指出,世间舍宅之所以被称为火宅,是因为众生在其中因贪心而驰走四方,求得则受用不足、追求无厌,求不得则心生热恼。经中以「草木」比喻世间财宝,以「世舍宅」比喻众生的贪欲之心,微火能烧尽一切草木,贪欲亦能引发无量的「烦恼之火」。加之众生还面临着「老病死火」的无时熄灭,使三界成为彻底的火宅。

《妙法莲华经》则对火宅的恐怖惨状进行了极为细致的描绘。火宅不仅面临「四面一时,其炎俱炽」的火灾,其内部更是破败不堪、污秽充溢,充斥着蚖蛇、蝮蝎、蜈蚣等毒虫,以及狐狼、野干等恶兽,更有夜叉、饿鬼、鸠槃荼、毘舍阇等诸多恶鬼在其中争斗、食肉饮血,变状恐怖,众难非一。

2. 众生的愚痴与耽着

面对火宅的凶险,众生却表现出极度的愚痴与麻木。

《妙法莲华经》指出,身处火宅之中的众生(比喻为「诸子」或「幼童」)「稚小无知」,对面临的危险「不觉不知、不惊不怖,亦不生厌,不求解脱」,反而「欢喜游戏」,贪著于「麁弊色声香味触」等五欲财利,在三界火宅中东西驰走,虽遭大苦而不以为患。

《大乘本生心地观经》则以「飞蛾投火」来比喻凡夫对色欲的盲目追求。经中指出「飞蛾见火光,以爱火故而竞入」。众生因贪爱色相而盲目追求,却不知色欲具有强烈的染着力,最终「还被火烧来众苦」,如同飞蛾在火中甘心自焚一般。

3. 长者的救度与寓言

为了救拔身处火宅的众生,两部经典均引入了「长者」这一角色,但展开了不同的寓言故事:

在《妙法莲华经》中,如来作为「一切世间之父」,深知若仅以神力与智慧力直接为众生赞叹如来知见,众生因未免生老病死之苦,无法理解佛的智慧。因此,如来采用「方便」之法,宣称门外有「羊车、鹿车、牛车」等珍玩之具,诱使诸子竞共驰走,争出火宅。当诸子安隐得出火宅、免除火难后,长者因自身「财富无量」,不应以下劣小车分与诸子,故「等心各各与之」最为高广庄严、众宝严饰、白牛所驾的「七宝大车」(即大乘佛乘),令众生皆以如来灭度而灭度之。

而在《大乘本生心地观经》中,则讲述了「重舍焚死」的寓言:有一位豪富且常修善行的「大长者」(比喻诸佛如来),其家业传至一个愚痴弊恶、深着五欲的「愚子」(比喻世间凡夫)。愚子违背父教,不依长者将财产分作四分的良制,反而耗资建造了极其奢华的七层宝楼,日夜耽著于五欲之乐。当邻家忽然起火、猛焰随风蔓延并焚烧其楼阁时,愚子因愚痴与瞋心,非但不逃生,反而带着妻子、奴婢等眷属躲入重舍之中,闭门不出,最终「一时俱死」。经文以此明确指出,凡夫众生不顺佛教、造作恶业,就如同这位长者子一样,最终会堕入「三恶道」(或称「诸恶趣」),在长劫中独自承受「焚烧苦」。

三、 不同部类与译本的表述差异

在不同经典中,关于「火宅」的比喻细节、角色结局以及修行术语存在显著的表述差异:

1. 子嗣称呼与结局的差异:在《法华经》中,长者之子被称为「诸子」或「幼童」,他们虽在火宅中嬉戏,但最终通过长者的方便引导,乘车安全逃出火宅,并获得等赐的「七宝大车」;而在《心地观经》中,长者之子被称为「愚子」,他因违背父教、耽着五欲,在火灾来临时闭门不出,最终「一时俱死」。 2. 救度方式的差异:《法华经》侧重于如来以「方便」力(设三车)成功救拔众生出离火宅;而《心地观经》则通过愚子「重舍焚死」的悲剧,警示不顺佛教、造作恶业的凡夫将堕入「三恶道」、「诸恶趣」或「三途」中承受长劫的「焚烧苦」。 3. 避难与修行之所的称呼:《心地观经》中明确提到出家修行、避开火宅的清净居所为「阿兰若」或「山林寂静」处;而《法华经》则主要以火宅之外的「露地」作为诸子避难和等赐大车的地方。

四、 与相关概念的关系

1. 三界与五欲:火宅是「三界」的直接比喻。众生在火宅中贪着的「麁弊色声香味触」或「五欲之乐」,是导致其被烦恼之火焚烧的根本原因。 2. 三乘与大乘(佛乘):在《法华经》中,为了诱导众生出离火宅,如来设「三车」之方便:「羊车」比喻「声闻乘」,指那些欲速出三界、自求涅槃的众生;「鹿车」比喻「辟支佛乘」,指乐独善寂、深知诸法因缘的众生;「牛车」比喻「大乘」(菩萨乘),指求一切智、佛智,愍念安乐无量众生的菩萨。而最终等赐的「七宝大车」则代表唯一佛乘(大乘)。 3. 涅槃与出家:脱离火宅的终极目标是进入「清净涅槃城」或「无为常乐宫」。为此,众生需「厌离世间」,修持「梵行」,作「沙门」,住于「阿兰若」,使「三昧」与「神通」现前。

五、 代表性原文引用

1. 《妙法莲华经》:「三界无安,犹如火宅,众苦充满,甚可怖畏。」 2. 《妙法莲华经》:「长者见是大火从四面起,即作是念:我虽能免此火宅之门,而诸子等,于火宅内乐着嬉戏,不觉不知、不惊不怖……」 3. 《大乘本生心地观经》:「世间舍宅如石火,亦如人间微少火,众生贪心在其中,驰走求之无厌足。」 4. 《大乘本生心地观经》:「愚子违背父教……邻家火起,延烧其楼,愚子愚痴及瞋心故,非但不逃,复将妻子奴婢等,入于重舍,闭门不出,一时俱死。」

By SutraAI-generated

大乘本生心地觀經T0159 · 本緣部

《大乘本生心地觀經》以「火宅」喻說三界不安,核心論述集中於勸導在家菩薩與出家菩薩觀察世間舍宅之過患。其論述特色在於將火宅之火直接歸因於貪欲之心,並以「草木—舍宅」之對應關係展開譬喻,而非泛論五濁或生老病死。

一、核心表述:以微火燒草木喻貪心之火。經中云:「出家菩薩觀世舍宅,猶如石火深生厭患。」其立論之邏輯為:世間財寶猶如草木,貪欲之心如世舍宅;以貪求無厭之心馳走四方,得時受用不足,不得時心生熱惱日夜追求,故「世間一切舍宅,能生無量煩惱之火,為起貪心恒無知足」。是故「一切諸佛說於三界名為火宅」。此經之獨特處在於:火宅之火並非單指外境之災,而是貪心所生之「煩惱之火」;而宅本身即是貪欲馳求之結構,並非安穩居所。

二、偈頌重述:以少火漸燒一切草木。經以偈頌再次申說:「出家菩薩觀世宅,猶如人間微少火,一切草木漸能燒,世宅當知亦如是。眾生所有眾財寶,更互追求常不足,求不得苦恒在心,老病死火無時滅,以是因緣諸世尊,說於三界為火宅。」 偈中將「老病死火」與「求不得苦」並列為宅中常燃之火,呼應前文「煩惱之火」之義,並指出欲超過三界之苦,須「修梵行作沙門,三昧神通得現前,自利利他悉圓滿」。

三、長者愚子喻:火宅之展轉輪迴相。經中另以長者愚子之喻,從家族承業之角度說明火宅之相:長者以家財付愚子,愚子造七層珍寶樓、恣五欲樂,後隣家火起,猛焰隨風,「庫藏珍財及妻子,層樓舍宅悉焚燒,積惡招殃遂滅身,妻子眷屬同殞歿」。此喻結云:「三世諸佛如長者,一切凡夫是愚子,不修正道起邪心,命終墮在諸惡趣,長劫獨受焚燒苦,如是展轉無盡期。」 此段以「焚燒苦」與「展轉無盡期」之語,強調火宅之火非一時之災,而是惡趣長劫之相。

四、術語與用詞特點。本經論火宅所用之主要術語為「世舍宅」「煩惱之火」「三界名為火宅」「焚燒苦」,並以「貪欲之心如世舍宅」之等式將貪心與宅合為一體,重在從能所二方面顯示宅之不安性。

五、出離之道。經中對治火宅之方為「厭離世間,名真出家」,並勸「在家佛子汝當知,不貪世樂勤修證,厭世出家修梵行,山林寂靜離諸緣,為報四恩修勝德,當於三界為法王。盡未來際度眾生,作不請友常說法,永截愛流超彼岸,住於清淨涅槃城」,故此經之火宅說,最終指向出家修梵行、自利利他之菩薩行。

妙法蓮華經T0262 · 法華部

《妙法蓮華經》以「火宅」為喻,闡明三界充滿眾苦、熾然不安之理,其核心表述為「三界無安,猶如火宅,眾苦充滿,甚可怖畏」。此喻以長者之宅舍突遭大火為背景,勸導眾生出離三界。

一、火宅之景象 經中詳述火宅之狀:宅舍久故頓弊,堂舍高危,柱根摧朽,梁棟傾斜,基陛隤毀,牆壁圮坼,覆苫亂墜,椽梠差脫;中有鵄梟雕鷲、蚖蛇蝮蠍、蜈蚣蚰蜒、守宮百足等諸惡蟲獸,更集夜叉、鳩槃荼、毘舍闍、餓鬼等惡鬼,「周章悶走」、「爭取食之」,「臭烟熢㶿,四面充塞」。宅主外出未久,後宅「欻然火起,四面一時,其炎俱熾,棟梁椽柱,爆聲震裂」,毒害火災,眾難非一。

二、長者設方便救子 諸子先因遊戲來入此宅,稚小無知,歡娛樂著。長者知先心各有所好種種珍玩,乃以羊車、鹿車、牛車為誘,告言:「汝等於此火宅,宜速出來,隨汝所欲,皆當與汝」。諸子「適其願故,心各勇銳,互相推排,競共馳走,爭出火宅」,「離諸苦難」。長者見子得出,住於四衢道中露地而坐,即於師子座而自慶言:「我今快樂!」

三、三車與大車之轉變 長者初許三車,後因財富無量,「不應以下劣小車與諸子等」,遂「各賜諸子等一大車」,「以眾寶物,造諸大車」,「有大白牛,肥壯多力,形體姝好,以駕寶車」,「等賜諸子」。此乃以方便力,終與一乘大白牛車。

四、三界火宅之對應 經文明示:「三界無安,猶如火宅,眾苦充滿,甚可怖畏。常有生老、病死憂患,如是等火,熾然不息。如來已離,三界火宅,寂然閑居,安處林野。今此三界,皆是我有,其中眾生,悉是吾子」。故三界如火宅,生老病死憂患如宅中之火,「熾然不息」;如來已離此火宅,於林野寂然安處。

此經之獨特表述:以「火宅」喻三界,並將「生老病死憂患」具體對應為「火」;以「方便」施三車之許而終賜大白牛車;以「四衢道中露地」喻出離三界之處。

妙法蓮華經文句T1718 · 經疏部

本疏以「火宅」一喻闡釋三界不安之理。火宅之「宅」喻三界,總顯三界果報不安隱之相:「其家廣大」即三界為如來應化所統攝,宅中堂喻欲界、閣喻色無色界、牆壁喻四大、柱根喻命、梁棟喻意識,頹落、傾危、腐敗則喻老朽遷變無常之相。

宅中所起之火,喻五濁八苦之逼迫。能燒之火「從四面起」,四面即身受心法之四邊,從此起淨、樂、常、我之四倒,八苦之火眾苦皆集,周匝俱時,炊然本無今有,由無明故有。此即疏之獨特術語配對:以「身受心法」標宅之四面(或作四大、四生、四倒之解,疏取身受心法為正)。

火宅與五濁之配對尤為詳明,疏明言「火宅本譬五濁」:嬉譬見濁,戲譬煩惱濁,不覺不知、不驚不怖譬眾生濁,火來逼身苦痛切己譬命濁,心不厭患、無求出意譬劫濁,五項各當一濁,合成五濁之相。

宅中眾生之不覺,疏以「不覺不知」釋之:不言有火名不覺,不解火是熱法名不知;不畏傷身名不驚,不慮斷命名不怖。眾生全不覺五陰、八苦,不知四倒、三毒,不識惑故不憂慮,亦從聞思修三慧闡釋其義。

疏又討論「所燒之門」之義:教門有能詮所詮,件可灰燼空不可燒;詮辯是無常,所詮非無常,故能詮名所燒、所詮名安隱得出。小乘無常教門從所燒門出,大乘常住教門體達燒無燒而安隱得出。

火宅譬之整體結構,疏引諸師之解(如瑤師云三譬、玄暢師及龍師云六譬),綜言之,火宅本譬〈方便品〉內三章——五濁章、真實章、不虛妄章。長者見火,喻佛以佛眼觀見六道眾生,見大火起大驚怖,起慈悲心。

火起之勢分處所:四面起火喻身受心法起四倒五濁八苦,猛炎喻欲界四倒八苦,臭煙喻色界四倒,穴中毒蛇等喻無色界火起,諸鬼神、惡獸毒蟲、蜈蚣蚖蛇等各喻三界不同層次之苦迫;非想最頂猶有八苦之火,頭上火然,無無漏故飢渴所惱。

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