Mbh 14.56.2a

"Vaisampayana said, 'O Janamejaya, Utanka was endued with austere penances. He was devoted to his preceptor. Endued with great energy, he abstained from worshipping anybody else. All the children of the Rishis, O Bharata, entertained even this wish, viz., that their devotion to preceptors should be as great as that of Utanka. Gautama's gratification with and affection for Utanka, among his numerous disciples, were very great, O Janamejaya. Indeed, Gautama was highly pleased with the self-restraint and purity of behaviour that characterised Utanka, and with his acts of prowess and the services he rendered to him. One after another, thousands of disciples received the preceptor's permission to return home (after the completion of their pupilage). In consequence, however, of his great affection for Utanka, Gautama could not permit him to leave his retreat. Gradually, in course of time, O son, decrepitude overtook Utanka, that great ascetic. The ascetic, however, in consequence of his devotion to his preceptor, was not conscious of it. One day, he set out, O monarch, for fetching fuel for his preceptor. Soon after Utanka brought a heavy load of fuel. Toil-worn and hungry and afflicted by the load he bore on his head, O chastiser of foes, he threw the load down on the Earth, O king. One of his matted locks, white as silver, had become entangled with the load. Accordingly, when the load was thrown down, with it fell on the earth that matted lock of hair. Oppressed as he had been by that load and overcome by hunger, O Bharata, Utanka, beholding that sign of old age, began to indulge in loud lamentations from excess of sorrow. Conversant with every duty, the daughter of his preceptor, who was possessed of eyes that resembled the petals of the lotus, and of hips that were full and round, at the command of her sire, sought, with downcast face, to hold Utanka's tears in her hands. Her hands seemed to burn with those tear-drops that she held.