Then he gave to Thor the hammer, and said that he might strike with it as hard as he pleased; no matter what was before him, the hammer would take no scathe, and wherever he might throw it he would never lose it; it would never fly so far that it did not return to his hand; and if he desired, it would become so small that he might conceal it in his bosom; but it had one fault, which was, that the handle was rather short.

- Prose Edda (Loke's Wager With The Dwarfs)