佛祖統紀 17.36

17.36

法師俊芿。日本國人。先傳瑜伽密教（唐元和間。國人空海入中國。受密教於不空弟子慧果）。久之杭海來中國。登靈山謁北峯。學天台一宗。執經受教盡通其旨。開禧初。北虜犯邊。芿啟北峯欲結壇誦呪。如不空解安西圍。時論委靡竟不克行。北峯乃令遣徒歸國取中華先所傳五部之法。而其徒淪於海（此是北峯印法師法嗣。有十六人。前失十一人。後失三人。唯存此法師與趙彥肅二人而已）。

Dharma Master Shunjō was a man of Japan. He had previously transmitted the Yoga esoteric teachings. (During the Yuanhe era of the Tang, his countryman Kūkai entered China and received the esoteric teachings from Huiguo, a disciple of Amoghavajra.) Later he crossed the sea and came to China, ascending Lingshan to visit Beifeng. He studied the Tiantai lineage, holding the scriptures and receiving instructions, thoroughly penetrating their purport. At the beginning of the Kaixi era, the northern barbarians invaded the border; Shunjō proposed to Beifeng that he wished to establish an altar and recite mantras, just as Amoghavajra had lifted the siege of Anxi. At that time opinion was weak and hesitant, and in the end it could not be carried out. Beifeng then had him dispatch disciples back to his country to retrieve the teachings of the Five Divisions previously transmitted to China, but his disciples were drowned in the sea. (These are the Dharma heirs of Dharma Master Beifeng Yin. There were sixteen persons; the previous eleven were lost, and the later three were lost, leaving only this Dharma master and Zhao Yansu.)