成唯識論述記 7.92

7.92

述曰：捨受遍相應，彼論不待言，苦、樂不遍俱，何緣論不說？既不說有苦、樂，故知五識無。問：不說苦俱，即言五識無尋、伺？不說與樂俱，初定無尋、伺？

The Commentary states: Because the sensation of equanimity is pervasive in its association, that treatise does not need to mention it. Pain and pleasure are not pervasive in their concurrence; for what reason would the treatise fail to mention them? Since it does not state that they have pain and pleasure, we know that the five consciousnesses lack them. Question: If not mentioning accompaniment by pain means the five consciousnesses lack investigation and examination, then does not mentioning accompaniment by pleasure mean the first dhyāna lacks investigation and examination?