對方便之教道，稱真實之證道云真門。行願品疏二曰：「總為迷真，故示真門。」教行信證化身土卷曰：「小本唯開真門，無方便之善。」
The gateway of truth, or reality; the Truth; the school of perfect truth, in contrast with partial truth adapted to the condition of the disciple.
一真門 真者，真實之義；係對於方便之教道，稱真實之證道為真門。如日本淨土真宗以念佛一法為真門，而謂其餘諸善萬行為假門。（參閱「要門」4988）p5323