僧羯磨 1.210

1.210

忘成法（爾時比丘住處欲安居，無所依人白，忘不心念，不知成不？佛言：「若為安居故來，便成安居。」）

Procedure for Unconscious Completion (At that time, a bhikṣu at his dwelling wished to enter the rains retreat, had no one to declare it to, and forgot to form the mental resolve. Not knowing whether it was completed or not, the Buddha said: "If he came for the sake of the rains retreat, the rains retreat is completed.")