律戒本疏 1.116

1.116

六十三以手痛挃犯墮　十七群有一小兒。不耐痒。以指擊歷。遂氣絕而死。彼死俱犯墮。若一指一墮。十指十墮。若指注若挺指犯突吉羅。若以木石等非身分擊歷之犯突吉羅。痛而不痒。不令悶絕故不犯。

Sixty-three: Poking painfully with the hand is an offense of pāyattika. There was a young boy among the seventeenfold group who could not bear tickling. [Another monk] struck and tickled him with fingers, whereupon his breath was cut off and he died. In that death, both committed pāyattika. If with one finger, one pāyattika; if with ten fingers, ten pāyattikas. Poking with a finger or extending a finger is a duṣkṛta. Striking and tickling with wood, stone, or things not part of the body is a duṣkṛta. If it causes pain but not tickling, and does not cause fainting and suffocation, there is no offense.