四分律刪繁補闕行事鈔 1.170

1.170

別眾多相，理須明委，然與不足數中，遞相交涉，且大分二：若身不至僧中，是別眾攝；雖至僧中，不足他數，是不足數。然不足之人，名通淨穢二人（淨僧睡、定、身不至僧，亦不足也）；別眾之稱，唯據清淨一色。義張四句，料簡如別。若論學悔，是不足限；必無解法，亦開秉之；別亦無過，則中間人也。

There are many aspects of a separate saṃgha, and the principle must be explained in detail; however, they are mutually interrelated with the category of 'insufficient to complete the quorum.' For now, they are broadly divided into two: if the physical body does not arrive among the saṃgha, it is included under a separate saṃgha; if one arrives among the saṃgha but is insufficient to make up the quorum for others, it is 'insufficient to complete the quorum.' However, those who are insufficient to complete the quorum apply to both pure and defiled persons (if a pure monk is sleeping, in samādhi, or his body does not arrive at the saṃgha, he is also insufficient); the designation of 'separate saṃgha' is based solely on the single class of pure [monks]. Four permutations are delineated in principle, and their critical analysis is as set forth separately. If we discuss those undergoing training for rehabilitation (śikṣādattaka), they fall within the limit of insufficiency; if there is absolutely no one who understands the ritual, it is also permitted for them to execute it; if there is no offense even if they are separate, they are intermediate persons.