菩薩戒本疏 2.11

2.11

若佛子！故食肉，一切肉不得食。夫食肉者，斷大慈悲佛性種子，一切眾生見而捨去，是故一切菩薩不得食一切眾生肉，食肉得無量罪。若故食者，犯輕垢罪。

"If a disciple of the Buddha intentionally eats meat—one must not eat any meat. One who eats meat cuts off the seed of the Buddha-nature of great compassion, and all sentient beings will see and flee from them. Therefore, no bodhisattva should eat the meat of any sentient being. Eating meat incurs limitless offenses. If one intentionally eats it, one commits a duṣkṛta offense."