四分律比丘含注戒本 3.159

3.159

The Buddha was in Śrāvastī. A householder invited the saṃgha. The group of six [monks] accepted food until their bowls overflowed, and discarded soup and rice. The householder criticized them, saying: "They have no shame and no moderation, like starving people greedy for much." The bhikṣus brought up the fault, and [the Buddha] consequently rebuked them and formulated the precept.