佛祖統紀 40.31

40.31

二十一年。南山道宣律師出刪定四分戒本。出家之士得以誦習。

In the twenty-first year, Vinaya Master Daoxuan of Nanshan produced the Abridged and Revised Dharmaguptaka Prātimokṣa, enabling renunciants to chant and practice it.