四分律比丘含注戒本 2.784

2.784

The Buddha was in Rājagṛha. A faithful craftsman made needle cases of bone, ivory, and horn for the bhikṣus, and consequently abandoned his trade and lacked clothing and food. People of the world criticized them, saying: "Expecting to obtain merit, instead he incurred misfortune." The bhikṣus reported this fault to the Buddha, who thereupon rebuked them and formulated the precept.