"On the day of the Conquest, the Prophet ﷺ entered Makkah, and he was wearing a black 'Imamah." [He said:] THere are narrations on this topic from 'Ali, 'Amr bin Huraith, Ibn 'Abbas, Rukanah.  

دَخَلَ النَّبِيُّ ﷺ مَكَّةَ يَوْمَ الْفَتْحِ وَعَلَيْهِ عِمَامَةٌ سَوْدَاءُ قَالَ وَفِي الْبَابِ عَنْ عَلِيٍّ وَعَمْرِو بْنِ حُرَيْثٍ وَابْنِ عَبَّاسٍ وَرُكَانَةَ