折疑論 2.83

2.83

隋文稽顙曇延（稽遲也。顙額也。隋史高僧傳。曇延去師中條山西宮寺僧。隋文帝同輦輿。帝以師禮之拜。封為國師）。

Emperor Wen of the Sui bowed his forehead to Tanyan. (Ji means "delay" [prostrating slowly]; sang means "forehead". The Sui History's Biographies of Eminent Monks states: Master Tanyan was a monk of the Xigong Monastery on Mount Zhongtiao. Emperor Wen of the Sui shared a carriage with him; the emperor bowed to him with the etiquette due a teacher and appointed him National Preceptor.)