四分律行事鈔資持記 2.475

2.475

隨釋中，初文，《五分》結輕。本不作意，闕初緣故，出時方覺。因動身心，故罪分兩等。言心動者，即生樂念。次引《善見》重者。雖在無記，稱前方便故。

In the sequential explanations, in the first text, the Mahīśāsaka-vinaya determines a lighter [offense]. Originally there was no intention, lacking the first condition, and one only realized it at the moment of emission. Because the body and mind were stirred, the offense is divided into two grades. 'Mind was stirred' means giving rise to a thought of pleasure. Next, when citing the heavier [verdict] from the Samantapāsādikā: although occurring during an indeterminate [state of mind], it corresponds to the earlier preparatory stage.