起信論疏筆削記 20.46

20.46

結勸中，論　過去，即釋迦之流；現在，即馬鳴之類；未來，即今之行者。《楞嚴》文殊歎觀音圓通云：過去諸如來，斯門已成就。現在諸菩薩，今各入圓通。未來修學人，當依如是法。我亦從中證，非唯觀世音。無異路者，經云：此是微塵佛，一路涅槃門。又云：十方如來，一門超出妙莊嚴路。

In the concluding exhortation, the treatise mentions 'the past'—namely, the like of Śākyamuni; 'the present'—namely, the like of Aśvaghoṣa; and 'the future'—namely, practitioners of the present day. In the Śūraṅgama-sūtra, Mañjuśrī praises Avalokiteśvara's perfect penetration, saying: 'All Tathāgatas of the past / have already accomplished this gateway; / all bodhisattvas of the present / now each enter perfect penetration; / people of future study and practice / should rely on such a Dharma. / I also realized it through this, / not only Avalokiteśvara.' Regarding 'no different path', the sūtra states: 'This is the single path to the gateway of nirvāṇa for Buddhas as numerous as fine dust motes.' And it also says: 'The Tathāgatas of the ten directions transcend along the single gateway of the wondrously adorned path.'