It is narrated from Hazrat Ka'b bin Ujrah (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) once mentioned a tribulation. During this, a veiled man passed by. The Noble Prophet (peace and blessings be upon him) saw him and said, "On that day, he and his companions will be upon the truth." I followed him, caught hold of his shoulder, turned him towards the Noble Prophet (peace and blessings be upon him), and asked, "This man?" The Noble Prophet (peace and blessings be upon him) said, "Yes!" When I looked, it was Hazrat Uthman Ghani (may Allah be pleased with him).
Hadith Referenceمسند احمد / أول مسند الكوفيين / 18118
Hadith Gradingحکم دارالسلام:صحيح من حديث كعب بن مرة البهزي، وهذا إسناد ضعيف، ابن سيرين عن كعب ابن عجرة مرسل، ومطر الوراق ضعيف، لكنه توبع