佛祖歷代通載 12.16

12.16

十一月會天后難月。命入宮祈福。及分難神光滿宮。自庭燭天因號佛光王（即中宗也）初帝甞謂奘曰。若生男子即聽出家。至是奘奉表請許。佛光王出家紹隆三寶。制可。

In the eleventh month, it coincided with the Empress's difficult month of childbirth. [Xuanzang] was ordered into the palace to pray for blessings. When the delivery took place, a divine light filled the palace, shining from the courtyard up to the heavens; hence he was named Prince Foguang (that is, Zhongzong). Previously, the Emperor had said to Xuanzang: "If a boy is born, We will permit him to undergo pravrajyā." When this occurred, Xuanzang presented a memorial requesting permission for Prince Foguang to undergo pravrajyā to continue and exalt the Three Jewels. An edict granted this.