四分律行事鈔資持記 2.811

2.811

十九。（佛在羅閱祇，跋難陀往市津上以錢易錢，居士譏嫌，因制。）

[Precept] Nineteen. (When the Buddha was in Rājagṛha, Upananda went to the market ferry to exchange money for money; householders criticized and disparaged him, so it was prohibited.)