佛說目連問戒律中五百輕重事經 1.129

1.129

問：「受戒時或值天雨，更移場屋下受戒，得戒不？」答：「若欲移戒場，當先解大界更結界場，乃得受戒。不爾者不得。」

Question: "At the time of receiving the precepts, if it happens to rain and they move the site under a roof to receive the precepts, does he obtain the precepts?"
Answer: "If they wish to move the precept platform, they must first dissolve the great sīmā and establish the platform sīmā again before he can receive the precepts. If not done thus, he does not obtain them."