Mbh 13.2.2b

He performed sacrifices, and was self-restrained and intelligent, devoted to Brahmanas and Truth. He never humiliated others, and was charitable, and learned in the Vedas and the Vedanta. The celestial river Narmada, auspicious and sacred and of cool waters, in her own nature, O Bharata, courted him. He begot upon that river, a lotus-eyed daughter, by name Sudarsana, who was, O king, endued with great beauty. No creature, O Yudhisthira, had ever been born before among womankind, that was possessed of such beauty as that excellent damsel who was the daughter of Duryodhana. The god Agni himself courted the beautiful princess Sudarsana, and taking the shape of a Brahmana, O monarch, sought her hand from the king. The king was unwilling to give his daughter in marriage to the Brahmana who was poor and not of the same rank with himself. Thereupon Agni vanished from his great sacrifice. The king, grieved at heart, then addressed the Brahmanas, saying,--'Of what sin have I, ye excellent Brahmanas, or you, been guilty, that Agni should disappear from this sacrifice, even as good done unto wicked men disappears from their estimation. Great, indeed, must that sin of ours be for which Agni has thus disappeared. Either must the sin be yours, or, it must be mine. Do you fully investigate the matter.'--Then hearing the king's words, O foremost prince of Bharata's race, the Brahmanas, restraining speech, sought with concentrated faculties the protection of the god of fire. The divine carrier of oblations, resplendent as the autumnal Sun, appeared before them, enveloping his self in glorious refulgence. The high-souled Agni then addressed those excellent Brahmanas, saying,--'I seek the daughter of Duryodhana for my own self.' At this all those Brahmanas were struck with wonder, and rising on the morrow, they related to the king what had been said by the fire-god. The wise monarch, hearing the words of those utterers of Brahma, was delighted at heart, and said,--'Be it so.