Musannaf Ibn Abi Shaybah 38800 — the first to do a thing, and who did

Sayyiduna Sa'd bin Malik and Sayyiduna Abu Bakrah (may Allah be pleased with them both) said: We heard the Messenger of Allah (peace and blessings be upon him) saying: "Whoever ascribes himself to someone other than his father, while knowing that his father is someone else, Paradise is forbidden to that person." Sayyiduna Sa'd bin Malik was the first person to shoot an arrow in the way of Allah. Sayyiduna Abu Bakrah was the first person from the delegation of Banu Thaqif to climb over the wall and come to the Prophet (peace and blessings be upon him).