I saw ʿUthman and ʿAli. ʿUthman used to forbid people to perform Hajj-at-Tamattuʿ and Hajj-al- Qiran (Hajj and ʿUmra together), and when ʿAli saw (this act of ʿUthman), he assumed Ihram for Hajj and ʿUmra together saying, "Lubbaik for ʿUmra and Hajj," and said, "I will not leave the tradition of the Prophet ﷺ on the saying of somebody."
شَهِدْتُ عُثْمَانَ وَعَلِيًّا ؓ وَعُثْمَانُ يَنْهَى عَنِ الْمُتْعَةِ وَأَنْ يُجْمَعَ بَيْنَهُمَا فَلَمَّا رَأَى عَلِيٌّ أَهَلَّ بِهِمَا لَبَّيْكَ بِعُمْرَةٍ وَحَجَّةٍ قَالَ مَا كُنْتُ لأَدَعَ سُنَّةَ النَّبِيِّ ﷺ لِقَوْلِ أَحَدٍ