Matsyapurana 52.23

52.23

oṃ oṃ brahmaṇā cātha sūryeṇa viṣṇunātha śivena vā
abhedātpūjitena syāt pūjitaṃ sacarācaram //

He who has adored all the four (Brahmâ, Sûrya, Viṣṇu and Śiva) without observing any difference among them, has worshipped, in fact, the whole universe, including the moveable and the immoveable.—23. He who is the supreme abode of Brahmâ and the rest, in whom all the three (Vedas) reside, He is Pûṣam, the personification of Vedas; and consequently he should be worshipped with great diligence.—24.