四分律行事鈔資持記 2.874

2.874

次明兩緣，引諸部中。《僧祇》開夏，不同《四分》。《五分》後安居竟，則同今宗；十日一看，開中制也。《善見》僧坊不須，非蘭若故；無者得寄，正開緣故；六夜一看，異上《五分》。上來下，總結。初示怖緣無限，三部所同。必下，明別開六夜，如後所引。

Next, explaining the two conditions by citing various Vinayas: the Mahāsāṃghika-vinaya permits the summer retreat, unlike the Dharmaguptaka-vinaya. In the Mahīśāsaka-vinaya, after the latter rains retreat ends, it is the same as our school; looking at it every ten days is a restriction within an exception. In the Samantapāsādikā, a monastic residence is not needed, because it is not an araṇya; when there is none, one may deposit it, which is precisely the condition for an exception; looking at it every six nights differs from the Mahīśāsaka-vinaya above. 'From above' downwards is the general conclusion. First, it indicates that the circumstance of fear has no time limit, which is shared by all three Vinayas. 'If' downwards explains the separate exception for six nights, as cited below.