唯識二十論述記 2.237

2.237

述曰：釋後句頌下之四字，生死妄夢，異真智生，故此所緣，皆非實有，顛倒虛妄所顯現故。量云：生死夢識所緣之境皆非實有；許夢境攝故；如極成夢境。

Commentary: This explains the last four characters of the second line of the verse. The false dream of saṃsāra arises differently from true cognition; therefore its objects are entirely unreal, because they are manifested by inversion and delusion. The inference is: The objects apprehended by the dream consciousness of saṃsāra are entirely unreal; because they are conceded to be subsumed under dream objects; like widely accepted dream objects.