Musnad Abu Ya'la al-Mawsili 6:64

Zuhayr narrated to us, Isma'il bin 'Ulayyah narrated to us, from Isma'il bin Abi Khalid, from Qays bin Abi Hazim, who said: Sa'd said: "I am indeed the first man to shoot an arrow at the polytheists, and the Messenger of Allah (may Allah bless him and grant him peace) did not combine his parents for anyone before me. I indeed heard him say: 'Shoot, O Sa'd! May my father and mother be sacrificed for you.'"