四分律行事鈔資持記 2.1523

2.1523

釋中，初科。文列四事，據具為言；乃至一事，亦名通耳。殺生是作犯，不乞是止犯。作下，總示通義。自修止持，前教四事，同時成辨，故一行中通有多業。

In the explanation, the first section: the text lists four matters, speaking in terms of completeness; even down to a single matter, it is also called non-obstructed. Killing living beings is violation by action; failing to request [a site] is violation by cessation. From 'action' below, the general meaning of non-obstruction is shown: while personally cultivating maintenance by cessation, the previously instructed four matters are accomplished simultaneously; therefore, within a single practice, there is non-obstruction across multiple karmas.