ʿAli and ʿUthman ؓ met in ʿUsfan. ʿUthman was telling the people not to do tamattuʿ or ‘Umrah. ʿAli ؓ said: Why do you want to forbid something that the Messenger of Allah ﷺ did? ʿUthman ؓ said: Leave us alone.
عَلِيٌّ مَا تُرِيدُ إِلَى أَمْرٍ فَعَلَهُ رَسُولُ اللهِ ﷺ تَنْهَى عَنْهَا ؟ فَقَالَ عُثْمَانُ دَعْنَا مِنْكَ