摩訶止觀 6.75

6.75

如此四門，得意，通入實相；若不得意，伏惑方便，次第意耳。《涅槃》名為「菩薩聖行」；《大品》名為「不共般若」。此皆是別教四門意，非今所用也。

With these four gates, if one grasps their intention, they lead through into true reality; if one does not grasp their intention, they are merely expedients for subduing delusions, understood sequentially. The Nirvāṇa [Sūtra] calls them 'the noble practice of the bodhisattva'; the Large [Prajñāpāramitā] calls them 'unshared prajñā.' These are all the intention of the four gates of the distinctive teaching, and are not what is used here.