It is an antonym of 'Jodo-mon' (Gateway of the Pure Land) (Jodo (Pure Land) sect) and often appears in the books by Shinran who was Jodo sect and the disciple of Honen.
「浄土門」（浄土教仏教）の対義語で、浄土宗および法然の弟子であった親鸞の著書に頻出する。