四分律刪補隨機羯磨 2.119

2.119

「僧已忍『差比丘尼某甲，為比丘尼僧故，半月往比丘僧中求教授』竟。僧忍默然故，是事如是持。」

"The saṃgha has already approved 'appointing Bhikṣuṇī N.N., for the sake of the saṃgha of bhikṣuṇīs, to go every half-month to the saṃgha of bhikṣus to seek instruction.' Because the saṃgha approves and is silent, thus is this matter maintained."