瑜伽論記 14.248

14.248

第四明色界無二塵二識。基云：云何用此根？義曰，如俱舍論以莊嚴身故，義曰：若莊嚴身，扶根塵得足，何用於根？義曰，以發言音要藉扶根塵，若有能依眼根，所依之塵方為依之發語，不然不得，故須根也，乃至如無界根，亦無依處，二根無者依處亦無等難，思準翻數。

Fourth, explaining that in the form realm there are no two dusts [smell and taste] and no two consciousnesses. Ji says: For what purpose are these faculties used? The meaning is: as in the Abhidharmakośa-śāstra, it is for the purpose of adorning the body. It is objected: If it is to adorn the body, the supporting dusts of the faculties would suffice; what need is there for the faculties? The answer: To utter spoken sounds, one must rely on the supporting dusts; if there are the dependent eye faculties, the dusts that are their supports only then serve as the basis to utter speech, and otherwise it is not possible; hence the faculties are necessary. Up to: just as without the sensory realm of the faculties, there are also no bases for them; if the two faculties are absent, their bases are also absent, and other such objections should be deduced in reverse.