Shinran, the founder of the Jodo Shinshu sect, wrote three phrases at the close of 'sojo' (introduction) of his major book "Ken Jodo Shinjitsu-kyogyo Shomonrui" (Selected passages revealing the true teaching, practice and attainment of the Jodo (Pure Land), namely "Daimuryoju-kyo Sutra" (Larger Sutra of Immeasurable Life), 'True teaching' and 'Jodo Shinshu sect.'
浄土真宗の宗祖とされる親鸞は、主著『顕浄土真実教行証文類』の「総序」の結びに、『大無量寿経』・「真実の教」・「浄土真宗」と記している。