瑜伽論記 14.83

14.83

基云：約師辨障諸部不同，雪山西山北山住部，俱云和上未必須清淨，大眾要須清淨，以說云今從眾僧乞受具戒故，其和上者但為作緣故，未必須清淨，薩婆多等要須和上清淨，大眾不必清淨，以說言和上某甲今從眾僧乞受具戒，先稱和上名故，是增上緣。

Ji says: Regarding determining obstacles with respect to masters, the various schools differ: the Haimavata, Aparaśaila, and Uttaraśaila schools all say that the upādhyāya does not necessarily need to be pure, but the great assembly must necessarily be pure, because the formula says 'I now beg to receive the complete precepts from the saṃgha', so the upādhyāya merely acts as a condition, and therefore does not necessarily need to be pure. The Sarvāstivādins and others hold that the upādhyāya must necessarily be pure, while the great assembly does not need to be pure, because the formula says 'Upādhyāya So-and-so, I now beg to receive the complete precepts from the saṃgha', and since the upādhyāya's name is recited first, he is the dominant condition.