佛說觀佛三昧海經 1.4

1.4

一時佛住迦毘羅城尼拘樓陀精舍。爾時釋摩男請佛及僧供養三月，七月十五日僧自恣竟。

At one time the Buddha was dwelling in Kapilavastu, at the Nyagrodhārāma. At that time, Mahānāman invited the Buddha and the saṅgha to receive offerings for three months, and on the fifteenth day of the seventh month the saṅgha's pravāraṇā was completed.