成唯識論述記 2.320

2.320

述曰：下第三卷自廣說也。正理師云：若無命根，誰為界、趣、生之體？於無色界起不同分心及無漏心，於下二界入無心定，誰能持身？識、煖不恒故。入無心位壽、煖有，三是一體，亦有識。入無色位，色皆無，三體既一，應有煖；無色厭煖、色，有識即無煖。無心不厭於細心，所以亦有識，其義應思。

The Commentary states: It will be explained extensively in the third fascicle below. The Nyāyānusāra master says: If there is no life faculty, what serves as the substance of the realms, destinies, and types of birth? When dissimilar-category minds and uncontaminated minds arise in the formless realm, and when entering the mindless concentration in the lower two realms, what can sustain the body? For consciousness and warmth are not constant. When entering the mindless state, life span and warmth exist; since the three are one substance, consciousness also exists. When entering the formless state, form is entirely absent; since the three substances are one, should warmth exist? The formless realm rejects warmth and form, so where there is consciousness there is no warmth. The mindless state does not reject subtle mind, which is why there is also consciousness; this meaning should be considered.