佛說目連問戒律中五百輕重事經 1.107

1.107

問：「受夏坐人，云何房舍破當補治？為謂始坐、坐訖時耶？」答：「三月中破即治。」

Question: "As for those who enter the summer retreat, when should damaged dwellings be repaired? Does it refer to the beginning of the retreat or when the retreat is completed?"
Answer: "Whenever they are damaged during the three months, they should be repaired immediately."