釋氏要覽 1.106

1.106

梵音具云。比丘尼。亦名除饉女。天竺以佛姨母摩訶波闍波提（此云大愛道）為始也。鈔云。今呼尼為阿姨師姨者此效佛召愛道也。師姑（未詳）尼有八敬法。去聖已遠。不復遵行繁不錄也。

The Sanskrit pronunciation in full is bhikṣuṇī, also called 'woman who removes famine'. In Tianzhu, it began with the Buddha's maternal aunt Mahāprajāpatī (translated as Great Love of the Way). The Commentary says: Nowadays calling a nun ayi ('maternal aunt') or shiyi ('teacher-aunt') imitates the Buddha calling Prajāpatī [his aunt]. Shigu ('teacher-aunt') is not yet explained. Nuns have the eight gurudharmas; being far removed from the Sage, these are no longer observed and practiced, so because of their length they are not recorded here.