成唯識論掌中樞要 2.86

2.86

謂假縱小乘色、心前後有等無間者，則《攝論》第三卷、上坐中經部執色、心展轉前為後種，今難則阿羅漢後心不成。《無性》云：是故色、心前後相生，但應容有等無間緣，無因緣故。

Namely, if it were hypothetically granted that in the Hīnayāna, form and mind before and after have equal-and-immediate conditioning, then as in the third fascicle of the Mahāyānasaṃgraha, the Sautrāntikas within the Sthaviras hold that form and mind alternately serve as seeds from prior to posterior; now, refuting this, the final mind of the arhat would not be established. Wuxing says: "Therefore, form and mind arising sequentially before and after can only possibly have equal-and-immediate condition, because there is no cause-condition (hetu-pratyaya)."