佛祖統紀 37.31

37.31

四年。帝幸同泰寺設盂蘭盆齋（梵語盂蘭此云解倒懸。是目連尊者設此盆供。得脫母氏餓鬼之苦）○通事舍人劉勰（音協）雅為太子所重。凡寺塔碑碣皆其所述（石城石像碑見存）是年表求出家。賜名慧地。

In the fourth year, the Emperor visited Tongtai Monastery and held an Ullambana vegetarian feast (in Sanskrit Ullambana, translated here as 'rescuing from hanging upside down'; this refers to the venerable Maudgalyāyana preparing this basin offering to deliver his mother from the sufferings of a hungry ghost). Liu Xie, Gentleman of the Transmission of Directives, was deeply esteemed by the Crown Prince. All the steles and inscriptions for monasteries and pagodas were authored by him (the stele for the stone image at Shicheng still survives). This year he submitted a memorial requesting to become a monk, and was granted the name Huidi.