Mbh 3.106.4a

“Lomasa said, ‘There was born in the family of the Ikshaku tribe, a ruler of the earth named Sagara, endued with beauty, and strength. And that same (king) of a dreaded name was sonless, O descendant of Bharata! And he carried havoc through the tribes of the Haihayas and the Talajanghas; brought under subjection the whole of the military caste; (and so) ruled over his own kingdom. And, O most praiseworthy of the descendants of Bharata! O chief of the Bharata race! he had two wives proud of their beauty and of their youth,--one a princess of the Vidarbha race, and the other of the royal line of Sivi. And, O chief of kings, that same ruler of men, betook himself to the mountain Kailasa, accompanied by both his wives, and with the desire of having a son became engaged in the practice of exceeding austere penances. And being engaged in the practice of rigid austerities, and (also) employed in the contemplation known by the name of Yoga, he obtained the sight of the magnanimous god with three eyes--the slayer of the demon called Tripura; the worker of blessings (for all beings); the (eternally) existent one; the ruling Being, the holder of the Pinaka bow; carrying in his hand his (well-known weapon)--the trident; the god of three eyes; the repository of (eternal) peace; the ruler of all those that are fierce; capable of assuming very many forms; and the lord of the goddess Uma. And that same ruler of men, of mighty arms, as soon as he beheld the god--that giver of boons--fell down at his feet, with both his queens, and proffered a prayer to have a son. And the god Siva, well pleased with him, spake (thus) to that most righteous of the rulers of men, attended by his two wives, saying, ‘O lord of men! considering the (astrological) moment at which thou hast proffered thy prayer to me, sixty thousand sons, O foremost of choice men valorous and characterised by exceeding pride, will be born in one off thy two wives (here).