四分律比丘含注戒本 2.555

2.555

The Buddha was in Śrāvastī. Kālodayin disliked seeing crows and shot them dead with a bamboo bow, which then turned into a great pile of corpses. Laypeople came to pay respects, saw them, and jointly deplored it. Bhikṣus raised the fault, and the Buddha accordingly laid down the precept.