四部律并論要用抄 2.38

2.38

使非親里尼浣故衣戒　十誦云。若比丘入尼寺中有埿。若中牛糞污比丘衣。尼為却者犯捨。以不可截故都捨。若浣衣時尼轉根者突吉羅。若病若為僧若為佛圖。若借他衣澆染打不犯　僧祇云。若比丘多有尼弟子。得使捨。取薪取水煮染取食行水扇扇等。唯不得教浣。

The precept on having an unrelated nun wash an old robe.
The Daśādhyāya-vinaya states: If a monk enters a nunnery and there is mud, or if cow dung soils the monk’s robe, and a nun cleans it for him, it is an offense requiring forfeiture. Because it cannot be cut away, the entirety must be forfeited. If when washing the robe the nun changes sex, it is a duṣkṛta. If he is ill, or if it is for the sake of the Saṃgha, or for a stūpa, or if he borrows another’s robe to rinse, dye, or beat, there is no offense. The Mahāsāṃghika-vinaya states: If a monk has many nun disciples, he may have them forfeit it, gather firewood, draw water, boil dye, take food, distribute water, fan with fans, and the like; he is only forbidden from having them wash [robes].