Ibn Mas'ud (May Allah be pleased with him) reported:
I can see the Messenger of Allah (ﷺ) look like one of the Prophets of Allah whose people beat and made him bleed while he was wiping the blood from his face and supplicating: "O Allah, forgive my people because they know not."[Al-Bukhari and Muslim].
Arabic/English book reference: Book 1, Hadith 646