瑜伽師地論略纂 5.8

5.8

「歡者，謂從本來清淨行者，觀資糧地所修淨行」等者，此中意說，加行道位方修等引，故住資糧方修淨行，持戒清淨生無悔等。或修定時，前遠方便要先戒淨，名資糧地，非要入位方修等引。

As for "'gladness' means that a practitioner whose conduct has been pure from the beginning observes the pure conduct cultivated on the stage of provisions" and so forth: the meaning expressed here is that only at the stage of the prayogamārga does one cultivate samāhita, so abiding in the provisions, one only then cultivates pure conduct, and the purity of upholding the precepts generates absence of regret and so forth. Alternatively, when cultivating samādhi, the prior distant upāya requires that one's precepts first be pure, which is called the stage of provisions; it is not necessary that one must have entered the path before cultivating samāhita.