四分律刪繁補闕行事鈔 2.268

2.268

奪畜生命戒六十一。《多論》：一出家之人，四等為懷；乃加殺害，違慈非憫。二自損惱他，生死根本，障道惡業故。三為長信敬，息誹謗故。五緣成，同前大殺戒。

The sixty-first precept: depriving an animal of life. The Sarvāstivāda-vinaya-vibhāṣā states: "First, those who have left the household cherish the four immeasurables in their hearts; to inflict killing upon them violates compassion and lacks pity. Second, it harms oneself and torments others, is the root of birth and death, and is an evil karma obstructing the Path. Third, it is to increase faith and reverence and put an end to slander." When five conditions are fulfilled, it is the same as the earlier major killing precept.