佛說目連問戒律中五百輕重事 1.87

1.87

問：「夏坐中得入流水池水浴不？」答：「界內盡得。若受七日，行過水亦得。」

Question: "During the summer retreat, may one enter flowing water or pond water to bathe?" Answer: "Within the sīmā it is entirely permissible. If one has accepted the seven-day [rule], crossing water while traveling is also permissible."