四分律行事鈔資持記 1.1088

1.1088

夏閏中。標云延促者，依閏為延，不依名促；又閏中三例，住日多少，延促可尋。

Regarding leap months during the rains: the heading mentions 'extension and contraction'. Following the leap month constitutes extension, while not following it is called contraction. Furthermore, among the three cases within the leap month, the greater or lesser number of days of stay, and thus extension and contraction, can be investigated.