大乘法苑義林章 7.37

7.37

第九所乘者，御彼所乘，行此路故。《佛地經》云「大止、妙觀以為所乘。止謂三摩地等持也，觀謂般羅若慧也。止、觀等運故名所乘。路是總位，位中止、觀各別名所乘。佛之三身恒乘於此入三佛土，十地菩薩乘此入於他受用土，地前二乘隨應亦乘此止、觀品入於淨土。若化穢土，通散定慧以為所乘，不爾無由生佛土故。」

Ninth, vehicles mounted: Because one rides upon what is mounted and travels this path. The Buddhabhūmi-sūtra says: "Taking great śamatha and wondrous vipaśyanā as the vehicles mounted. Śamatha means samādhi (equal holding); vipaśyanā means prajñā (wisdom). Because śamatha and vipaśyanā are applied in equal balance, they are called the vehicles mounted. The path is the overall stage; within the stage, śamatha and vipaśyanā are individually called the vehicles mounted. The three bodies of the Buddha always mount these to enter the three Buddha lands; the bodhisattvas of the ten grounds mount these to enter the other-enjoyment land; the two vehicles prior to the grounds also mount these divisions of śamatha and vipaśyanā according to their capacity to enter the pure land. In the case of transformed defiled lands, both distracted and concentrated wisdom are taken together as the vehicles mounted; otherwise, there would be no way to be born in a Buddha land."