瑜伽論記 22.465

22.465

言當知此三復有差別欲、色、無色，如其次第者，景師云：初喜愛滋潤者欲界，又即彼識如是轉時於二生處當知結生相續增廣一於有色是色界；二、於無色是無色界，有釋：據人始終即有三，就前三界中亦有此差別，初即欲界，次即色界胎滿故，後即無色出色胎故。

Regarding the statement 'It should be known that these three further have distinctions: the desire, form, and formless realms, respectively': Master Jing says: 'Moistened by joy and craving' refers first to the desire realm; furthermore, when that consciousness rolls on in such a manner, it should be known that in the two places of rebirth, the linking of existences continues and expands: one, in the realm with form, is the form realm; two, in the formless realm, is the formless realm. Another explanation states: based on a human's beginning and end, there are three; within the preceding three realms there are also these distinctions: the first is the desire realm, the next is the form realm because gestation is complete, and the last is the formless realm because it emerges from the form-gestation.