宋高僧傳 29.36

29.36

釋歡喜，不知何許人也。性無羈束，慈忍寬和，人未甞見其慍色，故號之焉。觀國之光，至于京輦，貴達下民延之，少見違拒。言語不常，事迹難測。德宗皇帝聞而重之。貞元十二年勅永泰寺置戒壇度僧，時喜與保唐禪宗，別勅令受戒，緇伍榮之。至其年六月十九日，卒于本寺焉。

Shi Huanxi; it is not known where he was from. His nature was unconstrained, kind, forbearing, and accommodating; people never saw anger on his face, hence they gave him this name [‘Joy’]. Observing the glory of the realm, he arrived at the capital; when nobles and commoners invited him, he rarely refused. His speech was erratic and his actions difficult to fathom. Emperor Dezong heard of him and esteemed him. In the twelfth year of Zhenyuan, an imperial decree ordered Yongtai Temple to set up an ordination platform to ordain monks; at that time Xi and Baotang Chanzong were given a special decree to receive the precepts, which the monastic ranks considered an honor. On the nineteenth day of the sixth month of that year, he passed away at his home temple.