四分律比丘含注戒本 2.533

2.533

佛在曠野城。六群相謂：「我等在上座前，不得隨意語言。」即出露地，拾諸柴草，然火向之。株內毒蛇，火氣逼出，遂驚擲火，燒佛講堂。比丘舉過，佛因訶制。

The Buddha was in Aṭavī. The group of six said to one another: "In front of the elders, we cannot speak as we please." They thereupon went out into the open, gathered firewood and dry grass, kindled a fire, and warmed themselves by it. A poisonous snake inside a tree stump was forced out by the heat of the fire; they were startled and flung the fire, burning down the Buddha's lecture hall. The bhikṣus brought up the fault, and on this account the Buddha rebuked [them] and laid down [the precept].