佛說目連問戒律中五百輕重事經 2.84

2.84

問：「食巾或少多醬菜飯羹墮上，要須浣不？」答：「不污亦須日浣。若有沙彌白衣，付之日從受，不犯。若已付，著室中無苦。若不付，有不浣，犯捨墮。」

Question: "If some sauces, vegetables, rice, or soup fall onto an eating cloth, must it be washed?" Answer: "Even if not soiled, it must still be washed daily. If there is a śrāmaṇera or a layperson, entrust it to him and receive it from him daily, and there is no offense. If it has been entrusted, keeping it in the room causes no harm. If it is not entrusted and left unwashed, one commits a naiḥsargika-pāyattika."