大乘起信論裂網疏 6.137

6.137

淨信覺解心者，若約圓妙絕待言之，則信即解、解即信，如來名世間解，亦可名究竟信也。今約初機言之，有信無解能長煩惱，有解無信能長邪見，故並舉淨信覺解兩心，以為入大乘道之正轍也。聽受者，聞慧也。思惟者，思慧也。修習者，修慧也。三慧資無漏種，令起現行故，能速成一切種智。

As for 'the pure faith and awakening-understanding mind', if spoken of from the perspective of the perfect, subtle, and non-relative, then faith is understanding and understanding is faith: the Tathāgata is called 'the Knower of the World' (lokavid), and may also be called 'the Ultimate Believer'. Now, speaking from the perspective of initial capacities, having faith without understanding can increase defilements, and having understanding without faith can increase false views. Therefore, both the mind of pure faith and the mind of awakening-understanding are brought up together as the proper track for entering the Mahāyāna path. 'Listening and accepting' is the wisdom of hearing. 'Reflecting upon' is the wisdom of reflection. 'Cultivating' is the wisdom of cultivation. These three wisdoms foster the untainted seeds and cause them to arise in active manifestation; therefore, one can swiftly accomplish the knowledge of all modes.