Good Manners and Form (Al-Adab)

Bukhari :: Book 8 :: Volume 73 :: Hadith 203

Narrated 'Ali:

I never heard Allah's Apostle saying, "Let my father and mother be sacrificed for you," except for Sa'd (bin Abi Waqqas). I heard him saying, "Throw! (arrows), Let my father and mother be sacrificed for you !" (The sub-narrator added, "I think that was in the battle of Uhud.")