Musannaf Ibn Abi Shaybah 34224 — Reports on the virtue of Uthman bin

Uqbah bin Aws al-Sadusi (may Allah have mercy on him) said that Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) said: In this Ummah there will be twelve (12) caliphs. Abu Bakr (may Allah be pleased with him): you people have had the confirmation of his name. And Umar bin al-Khattab (may Allah be pleased with him), who is a horn of iron: you people have had the confirmation of his name too. And Uthman bin Affan (may Allah be pleased with him), Dhu al-Nurayn, who was given two portions of mercy and who was killed unjustly: you people have had the confirmation of his name as well.