四分律行事鈔資持記 3.1120

3.1120

受緣中，初科。五節，前四明無師非師，後一明受者非法，通許得戒；此等，並據一期接誘，亦非常教。《四分》並不開者，以初受一法，萬行根本；必假多緣，方能成遂。各據一途，故分兩計。

In the conditions for reception, [this is] the first section. There are five points: the first four explain having no master or an illegitimate master, and the latter one explains illegitimacy in the recipient, uniformly permitting attainment of the precepts; all these are based on temporary expedients to guide and induce, and are not enduring rules. That the Dharmaguptaka does not permit any of these is because the single act of initial reception is the foundation of all practices; it must rely on multiple conditions before it can be successfully accomplished. Each relies on one approach, hence they are divided into two opinions.