成唯識論述記 4.279

4.279

述曰：第二異熟心，別經等可知。然此中意破經部、薩婆多皆得，即八證中身受證故。

The Commentary states: Second, the vipāka mind; its specific sūtras and so forth can be known. However, the intent here can refute both the Sautrāntikas and the Sarvāstivādins, as it is the proof from bodily experience among the eight proofs.