四分律比丘含注戒本 1.426

1.426

The Buddha was in the country of Śrāvastī. There were two householders and their wives who discussed together, wishing to buy a robe for Upananda. A bhikṣu begging for food heard this and told him all about it. He went to the two households and told them to make it together. The householders criticized and reproached him, and the bhikṣus reported the fault. The Buddha thereupon rebuked him and formulated the precept.