注大乘入楞伽經 5.198

5.198

上言一乘非餘外道、二乘、梵天王等之所能得，即知如來方便說三乘，故問何故說有三乘，而不說一乘？佛語大慧：「一乘人知生死自性是涅槃故，聲聞、緣覺無自涅槃法故。我說一乘，以彼但依厭離世間調伏修行而得解脫，非自己力得涅槃法，是故不為說一乘耳。

Above it was said that the One Vehicle cannot be attained by other non-Buddhists, followers of the two vehicles, Brahmā kings, and the like; thus one knows that the Tathāgata expediently speaks of the three vehicles. Hence he asks: Why speak of there being three vehicles, and not speak of the One Vehicle? The Buddha said to Mahāmati: "Followers of the One Vehicle know that the intrinsic nature of saṃsāra is nirvāṇa; the śrāvakas and pratyekabuddhas have no personal dharma of nirvāṇa. When I speak of the One Vehicle, it is because they only attain liberation by relying on disgust with the world, subduing, and practice; they do not obtain the dharma of nirvāṇa through their own power. Therefore I do not speak of the One Vehicle for them."