O our Lord! punish us not if we forget, or fall into sin; O our Lord! and lay not on us a load like that which thou has laid on those who have been before us; O our Lord! and lay not on us that for which we have not strength: but blot out our sins and forgive us, and have pity on us.
The Qur'an (Rodwell tr) Sura 2 - The Cow