According to the Hindus,
the sun rises from and sets behind
two hills respectively. He rises from the Udaya or Sun-rise
hill and sets behind the Asta or sun-set hill.
to Rudra, the god of fury, violence,
 Devasena literally
means the celestial army. This fable
seems to be an allegorical representation of the attempts made
by Indra to procure a leader for the celestial host.
“Markandeya continued, ’The Adbhuta fire, thus transforming himself into a house-hold one, was highly gratified with seeing those gold-complexioned ladies and touching them with his flames. And influenced by their charms he dwelt there for a long time, giving them his heart and filled with an intense love for them. And baffled in all his efforts to win the hearts of those Brahmana ladies, and his own heart tortured by love, he repaired to a forest with the certain object of destroying himself. A little while before, Swaha, the daughter of Daksha, had bestowed her love on him. The excellent lady had been endeavouring for a long time to detect his weak moments; but that blameless lady did not succeed in finding out any weakness in the calm and collected fire-god. But now that the god had betaken himself to a forest, actually tortured by the pangs of love, she thought, “As I too am distressed with love, I shall assume the guise of the wives of the seven Rishis, and in that disguise I shall seek the fire-god so smitten with their charms. This done, he will be gratified and my desire too will be satisfied."’”
“Markandeya continued, ’O lord of men, the beautiful Siva endowed with great virtues and an unspotted character was the wife of Angiras (one of the seven Rishis). That excellent lady (Swaha) at first assuming the disguise of Siva, sought the presence of Agni unto whom she said, “O Agni, I am tortured with love for thee. Do thou think it fit to woo me. And if thou dost not accede to my request, know that I shall commit self-destruction. I am Siva the wife of Angiras. I have come here according to the advice of the wives of the other Rishis, who have sent me here after due deliberation.”
“’Agni replied, “How didst thou know that I was tortured with love and how could the others, the beloved wives of the seven Rishis, of whom thou hast spoken, know this?”