佛祖統紀 33.49

33.49

改祭　佛為曠野鬼神鬼子母等。改棄血食而受僧眾出生之食。此緣起也（二事並見曉石芝施食通覽。具引藏經）梁武皇魏獻文。勅郊廟不用牲牷。唯薦蔬麪。此人主立法也（二事見通塞志）智者為關王授戒。慈雲為白鶴授戒。皆令禁斷葷血。專事蔬食。此沙門立法也（慈雲有改祭文。并決疑十頌。備引證驗）。

Reforming Sacrifices: For the spirits of the wilderness, Hārītī, and others, the Buddha made them abandon blood-offerings and instead receive the portions of food set aside by the monastic assembly; this is the origin (both events are seen in Xiaoshi Zhi's Shishi tonglan, citing the canon in full). Emperor Wu of Liang and Emperor Xianwen of Wei decreed that sacrificial victims of flesh and blood should not be used in the state suburban temples, and that only vegetables and dough should be presented; this was sovereigns establishing regulation (these two events are seen in the Treatise on Prosperity and Decline). Master Zhizhe conferred the precepts upon King Guan, and Ciyun conferred the precepts upon the White Crane, in both cases having them abstain from pungents and blood and exclusively serve vegetarian food; this was śramaṇas establishing regulation (Ciyun composed a text on reforming sacrifices along with ten verses resolving doubts, citing comprehensive evidence).