It is narrated from Sayyiduna Ali (may Allah be pleased with him) that he said: During the caliphate of Sayyiduna Uthman (may Allah be pleased with him), people differed about the Qur'an, so much so that one man would say to another: My recitation is better than your recitation. When news of this reached Sayyiduna Uthman (may Allah be pleased with him), he gathered all of us Companions and said: Today people have differed in recitation while you are present among them; I think that I should unite them upon a single recitation. Ali (may Allah be pleased with him) said: Our view also agreed with the view of Sayyiduna Uthman (may Allah be pleased with him). And he said: Had I been faced with the kind of matter that Uthman (may Allah be pleased with him) faced, I would certainly have done just as Uthman (may Allah be pleased with him) did.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2375
Hadith Gradingمحدثین:صحيح
Hadith Takhrij«صحيح۔ اخرجه ابن عساكر في تاريخ دمشق 39/ 245»