佛說目連問戒律中五百輕重事經 1.91

1.91

問：「後坐人得七月十五日受歲起去不？」答：「不得。若先不知已受，得歲。若知法故違，不得。若已和合僧就受籌而已，若後坐人受歲時，前坐人亦爾。」

Question: "May a person of the later retreat receive monastic age on the fifteenth day of the seventh month and get up and leave?" Answer: "He may not. If he previously did not know and has already received it, he obtains monastic age. If he knows the rule and intentionally violates it, he does not obtain it. If the saṃgha has already harmonized, he merely approaches to receive the tally; when the person of the later retreat receives monastic age, the person of the earlier retreat does likewise."