Farat bin Abi 'Abdur Rahman فرات بن أبي عبد الرحمن القزاز · The Book of the Sunnah

"I heard Ibn 'Abbas say: 'When 'Umar was placed on his bed (i.e., his bier), the people around him gathered around him, praying and invoking blessings upon him,' or he said, 'praising him and invoking blessings upon him before (the bier) was lifted up, and I was among them. No one alarmed me except a man who crowded against me and seized me by the shoulder. I turned and saw that it was 'Ali bin Abu Talib. He prayed for…

The Messenger of Allah said: "O 'Uthman, if Allah places you in authority over this matter (as the caliph) some day and the hypocrites want to rid you of the garment with which Allah has clothed you (i.e., the position of caliph), do not take it off." He said that three times. (One of the narrators) Nu'man said: "I said to 'Aishah: 'What kept you from telling the people that?' She said: 'I was made to forget it.'"