四分律比丘含注戒本 2.503

2.503

佛在舍衛。六群中一人，擊十七群中一人，幾令命終。比丘以過白佛，因制此戒。

The Buddha was in Śrāvastī. One among the group of six struck [and tickled] one among the group of seventeen, nearly causing him to lose his life. The bhikṣus reported the fault to the Buddha, who on this account laid down this precept.