question #2 Sahih Muslim 1223c, Book 15, Hadith 173 : How did ‘Ali respond to Uthman’s prohibition of Tamattu’ and ‘Umra during Hajj?

What is your opinion about a matter which the Messenger of Allah (ﷺ) did but you forbid it? Thereupon Uthman said: You leave us alone, whereupon he (‘Ali) said: I cannot leave you alone. When ‘Ali saw this, he put on Ihram for both of them together (both for Hajj and ‘Umra).