四分律比丘含注戒本 1.558

1.558

The Buddha was in the country of Śrāvastī. Nanda's disciple was very capable of exhorting and converting. Upananda wished to travel together with him, so he first gave him a robe. Other bhikṣus said: 'He is foolish; he does not know how to recite the precepts, preach the precepts, perform the poṣadha, or execute karman.' Later, when [the disciple] would not accompany him, [Upananda] immediately snatched away the robe. Bhikṣus rebuked him and reported it, and the Buddha laid down the precept on this account.