Mahabharata Udyoga Parva Chapter 104:2

Mahabharata Udyoga Parva (Bhagwat Yana Parva) Chapter 104:2 Kanwa continued, 'Matali then said unto Aryaka, "I have formed a plan. This thy grandson is elected by me as my son-in-law. Let this Naga then, proceeding with me and Narada, come to the Lord of heaven the chief of the celestials, O best of Nagas. I shall then endeavour to place obstacles in the way of Suparna, and as a last resource, we will ascertain the period of life that hath been vouchsafed to Sumukha. Blessed be thou, O Naga, let Sumukha, therefore, come with me to the presence of the Lord of the celestials." Saying this, they took Sumukha with them, and all the four, endued with great splendour, coming to heaven beheld Sakra the chief of the gods seated in all his glory. And it so happened that the illustrious Vishnu of four arms was also present there. Narada then represented the whole story about Matali and his choice. Kanwa continued, 'Hearing all that Narada said, Vishnu directed Purandara, the Lord of the universe, saying, "Let Amrita be given to this youth, and let him be made immortal like gods themselves. Let Matali, and Narada, and Sumukha, O Vasava, all attain their cherished wish through thy grace." Purandara, however, reflecting on the prowess of Vinata's son, said unto Vishnu, "Let Amrita be given unto him by thee." Thus addressed, Vishnu said, "Thou art the Lord of all mobile and immobile creatures. Who is there, O lord, that would refuse a gift that may be made by thee?" At these words Sakra gave unto that Naga length of days. The slayer of Vala and Vritra did not make him a drinker of Amrita. Sumukha, having obtained that boon, became Sumukha (in reality) for his face was suffused with marks of joy. And having married Matali's daughter, he cheerfully returned home. And Narada and Aryaka also filled with delight at the success of their object, went away, after having worshipped the glorious chief of the celestials.