Musannaf Ibn Abi Shayba 3:4655

Hashim narrated to us, he said: Husayn informed us, he said: I prayed the morning prayer one day, and Uthman ibn Ziyad prayed behind me. He said: So I performed the Qunut in the morning prayer. He said: When I finished my prayer, he said to me: "What did you say in your Qunut?" I said: "I mentioned these words: 'O Allah, we seek Your help and we seek Your forgiveness, and we praise You with all goodness, and we do not disbelieve in You, and we cast off and abandon whoever acts wickedly against You. O Allah, You alone we worship, and to You we pray and prostrate, and to You we strive and hasten. We hope for Your mercy and we fear Your punishment; indeed, Your severe punishment is attached to the disbelievers.'" Uthman said: "This is how Umar ibn al-Khattab and Uthman ibn Affan used to do."