四分律刪繁補闕行事鈔 3.423

3.423

二明僧尼數量者。有人作本法已，將二三尼，將本法尼往僧中而受者。若依律本，比丘尼僧，應將受戒者至大僧中；乃至文云，二部僧具足滿；故知僧尼二十人也。《僧祇律》：尼受戒法，名二十眾；既有定數，前行非法。《五分》明文，彼云：彼和尚、闍梨，復集十尼僧，往比丘僧中，在羯磨師前小遠，兩膝著地，乞戒。

Second, explaining the required numbers of monks and nuns: There are cases where, after performing the fundamental procedure, someone takes only two or three nuns and escorts the candidates who completed the fundamental procedure to the bhikṣus to receive the precepts. If one relies on the Vinaya text, the bhikṣuṇī-saṃgha must escort the candidates to the great bhikṣus; furthermore, the text says that the two divisions of the saṃgha must both be fully complete; thus we know there must be twenty monks and nuns. The *Mahāsāṃghika Vinaya* states: The ritual for a nun receiving the precepts is called ‘the twenty-member assembly’; since there is a fixed number, the aforementioned practice is un-Dharmic. The *Pañcavargika* contains an explicit text stating: That upādhyāyikā and the ācāryikā assemble another ten nuns and proceed into the bhikṣu-saṃgha, kneeling on both knees a short distance before the karmakāraka, and beg for the precepts.