What does it mean that the manas grasps the perceiving-aspect of the eighth consciousness as self?

The eighth consciousness can perceive all dharmas, and the manas, following the eighth consciousness, can also perceive all dharmas; however, the marks of the dharmas perceived by the manas and by the eighth consciousness are different, and the contents they perceive differ: what the eighth consciousness perceives are non-worldly marks, whereas what the manas perceives are worldly dharma-marks. Relying on the perceiving-aspect (darśana-bhāga) of the eighth consciousness, after perceiving all dharmas, the manas takes all these dharmas to be "I" and to be "mine"—this is the view of self (satkāya-dṛṣṭi), including the view of self regarding persons and the view of self regarding dharmas.

Because of this view of self, the manas grasps (upādāna) at all these dharmas, unwilling to let go, universally imputing and clinging to them; hence the manas is also the consciousness of imputed nature (parikalpita-svabhāva). Sentient beings first have the view of self, and only afterwards the grasping of self. Because of ignorance, the manas does not understand that all dharmas are generated by the eighth consciousness, all belong to the eighth consciousness, and all possess the attributes of the eighth consciousness; after perceiving all dharmas by relying on the eighth consciousness, it mistakenly takes all dharmas to be its own and belonging to itself. This misunderstanding has continued from beginningless kalpas until now. If this misunderstanding is not eliminated through contemplative practice (vipaśyanā-caryā), the view of self cannot be eradicated, the suffering of birth-and-death cannot cease, and the cycle of saṃsāra will not end.