佛祖統紀 3.94

3.94

十一年（庚寅）阿難年八歲出家之日。得白四羯磨具足戒（三羯磨通前單白故云白四。羯磨翻業。謂所作善業也）度一百十阿羅漢。受三語戒。始以寶刀剪剃須𩬊。又囑憍陳如等。遍三天下為諸沙彌授戒（僧祇律）是年佛於柳山為純真陀羅王弟說法（十二遊經）。

Eleventh year (gengyin): On the day Ānanda renounced household life at the age of eight, he received the full ordination by a single motion and three karmans (the three karmans added to the preliminary single motion are called the 'four motions'; karman is translated as karma, referring to the wholesome actions performed). He delivered one hundred and ten arhats, receiving the three-phrase precept. For the first time, a jeweled blade was used to shave off the hair and beard. He further entrusted Kauṇḍinya and others to transmit the precepts to novices throughout the three continents (Mahāsāṃghika-vinaya). In this year, at Mount Willow, the Buddha preached the Dharma for the younger brother of King Druma Kiṃnara (Sūtra of the Twelve Years of Wandering).