釋氏要覽 3.316

3.316

今世人護惜兒孩。遂服以僧衣謂之寄褐。大唐開元釋教錄云。始因中宗孝和皇帝初生奇特。神光滿院自庭燭天。因號佛光王。即受三歸。被袈裟服。至十二月五日滿月。勅為佛光王度七僧仍請奘法師為王剃髮。

Nowadays, worldly people cherish their young children, so they clothe them in monastic garments, calling it "entrusting the habit." The Kaiyuan Buddhist Catalogue of the Great Tang states: "This originated when Emperor Zhongzong, Xiaohuandi, was newly born with remarkable portents: a divine light filled the courtyard, illuminating the sky from the courtyard. Thus he was titled Prince Foguang ('Buddha-Light'). He promptly received the three refuges and donned the kāṣāya robe. When the full month arrived on the fifth day of the twelfth month, an imperial decree ordained seven monks on behalf of Prince Foguang, and further invited Dharma Master Xuanzang to shave the Prince's hair."