大比丘三千威儀 1.3

1.3

中出家者，始受具戒，沙門儀法未能周悉，要須依止長宿有德行者。是以優波離問佛：「成就幾法盡令不依止耶？」佛答：「凡成就二十五法，不依止。」廣而言之二十五法，取要言之，但能知二部戒為本，今但成就十法。

The middling renunciants have just received full ordination, and being not yet fully conversant with the deportment and rules of a śramaṇa, they must rely on senior, venerable ones possessed of virtuous conduct. Therefore Upāli asked the Buddha: “Having accomplished how many dharmas is one completely exempt from niśraya?” The Buddha answered: “Generally, having accomplished twenty-five dharmas, one does not rely on niśraya.” To speak of them broadly, there are twenty-five dharmas; to speak of them essentially, only being able to understand the two sets of precepts is fundamental, and at present, accomplishing only ten dharmas [is required].