Saguna Brahman also is one and not many. Hence particular Vidyas which pertain to either Saguna Brahman or Nirguna Brahman are also one and not many. This also follows from the same hymns and the like enjoined in the one place being employed in other places for the purpose of devout meditation or Upasana. The same rule applies to other Vidyas also besides the Vaisvanara Vidya. Therefore, Vidyas are not many, though they are differently described in different Sakhas.
All Vedantic texts intimate identical devout meditations.
Thus the unity of Vidyas is established.