瑜伽師地論略纂 5.72

5.72

三三摩地中，文分為三：初別明三摩地行境別相，次明三摩地行別境同相，後釋先後次第妨難。初之一門安立諦行，其第二門非安立行；初之一門別相行，次之一門通相行。是謂差別。就初文中，初標空三摩地行相。

Among the three samādhis, the text is divided into three parts: first, separately clarifying the distinct characteristics of the practice and objects of the samādhis; next, clarifying the identical characteristics of distinct practice and objects of the samādhis; finally, resolving difficulties regarding their sequential order. The first gate is practice regarding established truths, while the second gate is practice regarding non-established [truths]; the first gate is practice of specific characteristics, while the next gate is practice of universal characteristics. These are their differences. Within the initial text, it first marks the practice and characteristics of the emptiness samādhi.