妙法蓮華經玄義 3.31

3.31

煖法緣四諦境生智，伏煩惱，智更增，成十六觀智。如火鑽，上下相依，生火燒薪。以有智知有境，能生煖智，令有萎悴。如夏時聚華為𧂐，華生煖氣，還自萎悴。又依陰、觀陰，發智火，還燒陰，如兩竹相摩生火，還燒竹林。尊者瞿沙說：求解脫智火，煖最在初。如火，以煙在初為相。無漏智火亦以煖法在先為相。如日，明相在初為相，是故名煖。

The dharma of warmth generates wisdom by taking the objects of the four truths as conditions, subdues defilements, and as wisdom further increases, it accomplishes the sixteen contemplative wisdoms. Like a fire drill, upper and lower relying on each other, producing fire to burn the firewood: because there is wisdom knowing that there is an object, it can generate the wisdom of warmth and cause existence to wither away. Like heaping flowers into a mound in the summertime, where the flowers generate heat and wither of themselves; again, relying on the aggregates, contemplating the aggregates, generating the fire of wisdom that turns back to burn the aggregates, like two pieces of bamboo rubbing together to generate fire that turns back to burn the bamboo grove. Venerable Ghoṣaka said: For the fire of wisdom that seeks liberation, warmth is foremost at the beginning. Just as fire has smoke at the beginning as its characteristic, the fire of uncontaminated wisdom also has the dharma of warmth first as its characteristic. Just as the sun has the sign of dawn at the beginning as its characteristic, therefore it is called warmth.