مُسْنَدُ أَحْمَدَ
Musnad Ahmad 4337
Musnad of Abdullah bin Mas'ood
It was narrated that 'Abdullah bin Mas'ood said: When the Messenger of Allah (ﷺ) shared out the flocks of Hunain at al-Ji'ranah, they crowded around him and the Messenger of Allah (ﷺ) said: "Allah sent one of His slaves to his people and they struck him and wounded him in the head. And he started wiping the blood from his forehead and saying: Lord forgive my people, they do not know.” ‘Abdullah said: It is as if I can see The Messenger of Allah (ﷺ) showing how that man wiped the blood from his forehead and said: Lord forgive my people, for they do not know.
Musnad Ahmad 4366Saheeh because of corroborating evidence; its isnad is hasan