瑜伽論記 9.282

9.282

若能如是如實了知等者，因緣之理淺情不測，唯佛究竟名最甚深。是故經云：佛十力中業力最深。

Regarding 'if one can accurately know in this way' and so forth: the principle of causes and conditions cannot be measured by shallow sentiments; only the Buddha penetrates it completely, so it is called most profound. Therefore, a sūtra states: 'Among the Buddha's ten powers, the power of karma is the most profound.'