"Saisho Ein Sanma Yaho" (Dainichi Nyorai's most secret teachings) (Ein Kanjo (the ceremony to be the successor of a ritual of the Ein School))," the base for practice, was the realization of "Richi funi Kai Kai Raisan" (worship of the Shingon conceptual world with the nonduality of knowledge and principle) and it is said that it was given not only to Kangen, his legal child, but also to Teisu at Hokaku-ji Temple, Shingonin, Yamato tosu.
その実修根本となる『最勝恵印三昧耶法』（恵印灌頂）は、『理智不二界会礼讃』の具現化であり、正嫡の観賢だけでなく、大和鳥栖真言院鳳閣寺において貞崇に授けたと伝える。