四分律比丘含注戒本 2.720

2.720

除杖、手、石，若以戶鑰、曲鉤、拂柄、香鑪柄挃者，一切吉羅。尼同犯。不犯者，有病須椎打，若食咽須椎脊，若共語不聞而觸令聞。若睡時以身委他上，若來往經行時共相觸，若掃地時杖頭誤觸者，開。

Apart from a staff, hand, or stone, if he jabs him with a door-key, a curved hook, a whisk handle, or a censer handle, it is in all cases a duṣkṛta. Bhikṣuṇīs commit the same offense. As for non-offenses: when someone is ill and requires patting/massage; when food is stuck in the throat and requires thumping on the back; when speaking to someone who does not hear and touching him to make him hear; when sleeping and leaning one's body onto another; when touching one another while walking back and forth in walking meditation; or when mistakenly touching with the end of a staff while sweeping the ground—these are permitted.