成唯識論述記 6.84

6.84

述曰：釋曾、未受，若體、若類；如涅槃等全不起念，即通三世。緣之起念，多於過去，亦念未來，與前所受諸境合故。若曾聞說涅槃等名而起念者，亦名曾受彼境之類而起於念。若總不聞，心散慢緣，便無念起。

The Commentary states: This explains what has and has not been experienced, whether entity or category; toward things such as nirvāṇa, no mindfulness arises at all, and this applies to the three times. When mindfulness arises cognizing them, it is mostly in the past, but it also recollects the future, because it is conjoined with various objects previously experienced. If one has previously heard the name of nirvāṇa, etc., spoken and gives rise to mindfulness, this is also called giving rise to mindfulness by having previously experienced the category of that object. If one has not heard it at all, and the mind is distracted and lax in cognizing, then no mindfulness arises.