Nawfal bin Musahiq (may Allah have mercy on him) said: Sayyiduna Uthman bin Hunayf (may Allah be pleased with him), who was the governor ('amil) of Sayyiduna Umar bin al-Khattab (may Allah be pleased with him), was speaking with him when he made him angry, so Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) picked up a handful (of pebbles) from the ground of al-Batha' and threw them at him (Sayyiduna Uthman bin Hunayf, may Allah be pleased with him). A stone from it struck his forehead and wounded him, and blood began to flow onto his beard. It was as if Sayyiduna Umar (may Allah be pleased with him) felt regret (at this), so he said: Wipe the blood from your beard. Sayyiduna Uthman bin Hunayf (may Allah be pleased with him) said: O Commander of the Believers! Do not let this trouble you. By Allah, the wrong I have done to those over whom you appointed me is far greater than what you have done to me. The narrator said: It was as if this statement of his greatly pleased Sayyiduna Umar (may Allah be pleased with him), and he increased his kindness towards him.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 8277
Al-Zuhri said: Sayyiduna Uthman bin Hunayf (may Allah be pleased with him) greeted Sayyiduna Mu'awiyah (may Allah be pleased with him), saying: As-salamu 'alayka ayyuha al-amir (Peace be upon you, O Amir), and with him was a group of the people of Sham. They said: Who is this hypocrite who has fallen short in greeting the Commander of the Believers? At this Sayyiduna Uthman (bin Hunayf) (may Allah be pleased with him) said to Sayyiduna Mu'awiyah (may Allah be pleased with him): "These people have objected to something in me which you know well; I greeted Sayyiduna Abu Bakr, Sayyiduna Umar and Sayyiduna Uthman (may Allah be pleased with them) in this very (manner)." Sayyiduna Mu'awiyah (may Allah be pleased with him) said: I think there is some truth in what he says, but when the tribulation broke out, the people of Sham said: By Allah, we will know our religion well and we will not fall short in greeting our Caliph. And I think that you, O people of Madinah, call even the official who collects the charity an Amir.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 8278