四分律刪繁補闕行事鈔 2.43

2.43

二者戒體，四門分之：一戒體相狀，二受隨同異，三緣境寬狹，四發戒數量。

Second, the essence of the precepts, divided into four sections: first, the characteristics and forms of the precept essence; second, the similarities and differences between upasampadā and subsequent practice; third, the breadth and narrowness of the conditions and objects; fourth, the quantity of generated precepts.