四分律行事鈔資持記 2.2121

2.2121

生後中。標云四篇，據後懺法，合云三篇，疑是字誤；或可吉羅離惡作惡說，或可提中開三十九十，故云四耳。

Under introducing what follows: It designates 'four categories', but based on the subsequent confession procedure it ought to say 'three categories', so it is suspected to be a textual error; or perhaps duṣkṛta is separated into bad actions and bad speech, or within pāyattika the thirty and ninety are opened, hence it merely says 'four'.