四分律刪繁補闕行事鈔 3.426

3.426

五入戒法中。先須請戒師。律無正文，準前須請。以外受法、問難、戒體、隨相，一一準僧中行之。

Fifth, entering into the precept ordination ritual. First, one must request the precept master. The Vinaya lacks explicit text, but following what precedes, one must make the request. As for the outer reception ritual, the interrogation on disqualifications, the precept essence, and the subsequent marks, each is carried out strictly according to the procedures among the bhikṣus.