Skandapurana 2.9.15.10

2.9.15.10

ramāsevyapādāmbujaṃ śāstrayoniṃ tamādyaṃ bhavantaṃ bhaje vāsudevam .. 4 ..

I worship you, the primeval Vāsudeva, whose lotus feet are served by Ramā, who are the source of scriptures.