四分律比丘含注戒本 2.195

2.195

The Buddha was in Śrāvastī. After Nanda was assigned by the Saṃgha to instruct the bhikṣuṇīs, he remained silent. Mahāprajāpatī invited him again, and he taught until sunset. The bhikṣuṇīs left the Jetavana and spent the night in the city moat, drawing ridicule from the laity. The bhikṣus reported this to the Buddha, and the Buddha rebuked [him] and instituted the precept.