大乘玄論 3.15

3.15

釋名第一。一乘者，乃是佛性之大宗，眾經之密藏，反三之妙術，歸一之良藥。迷之即八軸冥若夜遊，悟之即八軸如對白日也。釋名者，唯有一理、唯教一人、唯行一因、唯感一果，故名為一。《法華論》云「一謂同義。如來法身、聲聞法身、緣覺法身，三乘同一法身，故名為一。」乘者運出為義。運出有三種：一者以理運人，從因至果。如《大品》云「是乘從三界出，到薩波若中住。」二者以德運人，如《法華》云「得如是乘，令諸子等喜戲快樂。」三者以自運他，如《涅槃》云「乘涅槃船，入生死海濟度群生」矣。

First, explaining the name. The Ekayāna is the grand principle of buddha-nature, the secret treasury of all sūtras, the wondrous technique for reversing the three, the fine medicine for returning to the one. When confused about it, the eight rolls are as dark as travelling by night; when awakened to it, the eight rolls are like facing the bright sun. In explaining the name: There is only one principle, it teaches only one person, it practices only one cause, and it brings about only one fruit; therefore it is named 'one'. The Saddharmapuṇḍarīkopadeśa says: "'One' means the sense of sameness. The Tathāgata's dharmakāya, the śrāvaka's dharmakāya, and the pratyekabuddha's dharmakāya—the three vehicles are the same one dharmakāya; therefore it is named 'one'." 'Yāna' has the meaning of conveying out. Conveying out is of three kinds: First is conveying the person by principle, from cause to fruit. As the Pañcaviṃśatisāhasrikā says: "This vehicle departs from the triple world and abides in sarvajñā." Second is conveying the person by virtue, as the Saddharmapuṇḍarīka says: "Obtaining such a vehicle, making all the sons joyful and happy." Third is conveying others through oneself, as the Nirvāṇa says: "Riding the ship of nirvāṇa, entering the sea of birth-and-death to ferry across all sentient beings."