四分律比丘含注戒本 2.581

2.581

佛在舍衛。跋難陀與比丘親友，數犯，向說「不語人知」。後跋難陀共鬪，便言「犯罪」「不忍便說」。比丘舉過白佛，便訶而制。

The Buddha was in Śrāvastī. Upananda was close friends with a bhikṣu who repeatedly committed offenses and told him, "Do not tell anyone." Later, Upananda quarreled with him and immediately said, "You committed an offense," and being unable to bear it, he spoke of it. Bhikṣus raised the fault and reported it to the Buddha; he then rebuked him and laid down the precept.