瑜伽論記 7.289

7.289

覺支門中，念通二品此道支念偏於定攝者，何謂前約止觀門以辨攝，後約三蘊門以辨攝，故義有異。

Why is it that in the section on the factors of awakening, mindfulness extends to two categories, whereas here as a factor of the path, mindfulness is exclusively subsumed under concentration? This is because the former explains subsumption in terms of calm and insight, while the latter explains subsumption in terms of the three aggregates; hence the meanings differ.