Musannaf Ibn Abi Shayba 27:387

Isma'il ibn 'Ulayyah narrated to us, from Hisham, from Ibn Sirin, from Ka'b ibn 'Ujrah, that the Messenger of Allah (may Allah bless him and grant him peace) mentioned a tribulation and brought its time near. Then a man passed by, covered [with a garment]. He said, "This man and his companions will be upon guidance on that day." So the man [Ka'b] went and took him by his shoulders and turned his face toward the Messenger of Allah (may Allah bless him and grant him peace) and said, "This one?" He said, "Yes." And behold, it was Uthman.