"Gyoshin Hotsugan-kyo" (sutra written by Gyoshin) with an afterword dated September 767, which was completed after his death, is still stored in Horyu-ji Temple.
没後に完成した神護景雲元年（＝767年）九月の跋（あとがき）を持つ「行信発願経」が法隆寺に残されている。