成唯識論演祕 2.196

2.196

答：經部執有動為身表，真、似相對，似簡真動；有宗不然，故識變簡。有宗麁實，故聲是實，所以似簡；經部不然，但識變簡，各據一義亦不相違。

Answer: The Sautrāntika maintains that movement exists as bodily communicative action; in the contrast between real and apparent, 'apparent' excludes real movement; the Sarvāstivāda is not like this, so 'transformation of consciousness' excludes it. For the Sarvāstivāda, coarse matter is real, hence sound is real, so 'apparent' excludes it; the Sautrāntika is not like this, so merely 'transformation of consciousness' excludes it. Each relies on one rationale, and they do not contradict each other.