Musannaf Ibn Abi Shayba 24:106

Yahya ibn Adam narrated to us, he said: Qutbah ibn Abd al-Aziz narrated to us, from al-A’mash, from ‘Amr ibn Murrah, from Salim ibn Abi al-Ja’d, who said: The companions of Muhammad, may Allah bless him and grant him peace, wrote a criticism of Uthman. They said, "Who will take it to him?" Ammar said, "I will." So he went to him with it. When he read it, he said, "May Allah rub your nose in the dust." Ammar said, "And the noses of Abu Bakr and Umar." He said: So he stood up and trampled him until he fainted. He said: And he was wearing a *san* (a type of garment). He said: Then he sent for al-Zubayr and Talhah, and they said to him, "Choose one of three: either you pardon, or you take the land (i.e., go into exile), or you allow retaliation." Ammar said, "I will not accept any of these until I meet Allah." Abu Bakr said: I heard Yahya ibn Adam say: I mentioned this hadith to al-Hasan ibn Salih, and he said, "There was nothing greater against Uthman than what he did."