He sees all creatures clearly and at the same time. He is the wooer of his mother and the lover of his sister (Dawn), and he was given as a husband by the gods to the Sun-maiden Surya. In the wedding hymn, he is associated with the marriage ceremony (x. 85). Pusan serves as Surya's messenger with his golden aerial ships. He continues on his journey, observing the universe, and eventually settling in heaven. He is a protector who knows and sees all creatures. He drove the golden wheel of the sun downward as the best of charioteers.

He travels the long path between heaven and earth, visiting and returning to both beloved abodes. He leads the dead down the Fathers' long path. He is a road guardian, removing hazards from the way, and is known as the'son of deliverance' (vimco nápat). He follows and protects cattle, returning them unharmed and driving away the lost. His bounty is frequently mentioned. 'Glowing' (aghrni) is one of his unique nicknames. The name means 'prosperer,' which is derived from pus, which means to cause to thrive. The evidence, while not conclusive, suggests that Pusan was originally a solar deity, representing the sun's beneficent power manifested primarily in its pastoral aspect.