Musannaf Ibn Abi Shayba 27:410

Affan narrated to us, he said: Wuhayb narrated to us, he said: Dawud narrated to us, from Ziyad ibn Abd Allah, from Umm Hilal bint Waki’, from the wife of Uthman, who said: Uthman dozed off, and when he woke up, he said: "Indeed, the people are going to kill me." I said: "No, O Commander of the Faithful." He said: "I saw the Messenger of Allah, may Allah bless him and grant him peace, and Abu Bakr and Umar. They said: 'Break your fast with us tonight,' or they said: 'You will break your fast with us tonight.'"