佛說目連問戒律中五百輕重事經 1.70

1.70

問：「僧結界竟，後來僧共住，不持衣，失衣不？」答：「不失。當結時已通三世僧故。」

Question: "After the saṃgha finishes demarcating a sīmā, if later-arriving monks dwell together with them without keeping their robes with them, do they lose their robes?" Answer: "They do not lose them. Because at the time of demarcation it already extended to the saṃgha of the three times."