"I wish to give a boon to you. What would you like?" said Krishna.
"Achchyuta," said Utanga, "is it not enough I have seen Thee and Thy Form Universal? I do not desire any further boon." But Krishna insisted and the desert wandering simple brahmana said: "Well, my Lord, if you must give me some boon, let me find water to drink whenever I might feel thirsty. Give me this boon." MB 100 (Mahabharata Retold By C. Rajagopalachari) http://www.krishnapath.org/library/mahabharata-free-download/