This document indicates the doctrine of nenbutsu (Buddhist invocation) ojo (birth in the Pure Land) as 'Namu Amida Butsu (Homage to Amida Buddha), ojo comes only after nenbutsu' at the beginning, and explains that invocation of the Buddha's name is the only practice of senchaku in the following 16 chapters.
冒頭に「南無阿弥陀仏、往生之業、念仏為先（本）」と念仏往生の宗義を標示し、以下十六章に分けて、称名念仏こそが、選択の行業である旨を述べている。