觀無量壽佛經義疏 3.240

3.240

"‘Avalokiteśvara and Mahāsthāmaprāpta, with voices of great compassion, extensively expound for him the true mark of all dharmas and the method for eradicating sins.’" Sins arise from conditions and lack intrinsic nature. All dharmas are like this; hence it is called the true mark. As the Method of Practicing the Samantabhadra [Contemplation] states: "The ocean of all karmic hindrances arises entirely from false discrimination. If one wishes to repent, sit upright and be mindful of the true mark." This is what it refers to. Third, hearing the Dharma and gaining benefits.