In 1324, at Ryogen's request, he wrote "Jodo shin yosho" (Notes on the True Essentials of Pure Land), "Shojin hongaishu" (Collection on the Original Intent of the [Shinto] Kami), "Jimyosho" (Notes on Holding Fast to the Name), and gave them to him.
元亨4年（1324年）、了源の求めにより『浄土真要鈔』、『諸神本懐集』、『持名鈔』を著わし、付与する。