四分律行事鈔資持記 2.1011

2.1011

十八。（佛在舍衛，有比丘在重屋上住，坐脫脚床，脚脫墮比丘身，壞身出血；仰面恚罵，因制。）

Eighteen. (The Buddha was in Śrāvastī; a bhikṣu was living in an upper story, sitting on a bed with detachable legs; a leg detached and fell onto a bhikṣu's body, injuring his body and drawing blood; looking up, he angrily reviled him, on which account it was instituted.)