四分律行事鈔資持記 3.1060

3.1060

四中。廣德，謂教授人，須具十德，如〈自恣篇〉引。《本疏》應是首師《律疏》。僧中教授，尼中使尼，並是所為；故各滿五，方成廣去。二十歲，十德之一也。

In the fourth [section]: 'Extensive virtues' means that the instructor must possess ten virtues, as cited in the 'Pravāraṇā Chapter'. The 'Root Commentary' must refer to Master Shou's Vinaya Commentary. The instructor among the monks and the messenger nun among the nuns are both agents; hence each must have completed five [years of seniority] before they can fully go. Twenty years [of age] is one of the ten virtues.