Text (FS+errata): 2/2. ; {R}, Return ~this~ to its owner's hand: Add {2}{R} to your mana pool. Activate this ability only any time you could cast a sorcery. [Oracle 2009/07/08]
It is a mana ability even though the ability can only be played when you can play a sorcery. [Future Sight FAQ 2007/05/01]
