Skandapurana 16.106.13

16.106.13

yāvaṃtaḥ pṛthivīmadhye cīrṇavedavratā dvijāḥ ..
acīrṇavratavedā vā te'pi pūjyā dvijāḥ priye .. 13 ..

As many twice-born ones as there are on the earth who have performed the Vedic observances, / or even those who have not performed the observances or [studied] the Veda, they too are to be worshipped, O beloved!