Only Um Hani narrated to me that she had seen the Prophet ﷺ offering the Duha prayer. She said, "On the day of the conquest of Mecca, the Prophet ﷺ entered my house, took a bath and offered eight rakʿat (of Duha prayers. I had never seen the Prophet ﷺ offering such a light prayer but he performed bowing and prostrations perfectly .
أَنَّهُ رَأَى النَّبِيَّ ﷺ يُصَلِّي الضُّحَى غَيْرَ أُمِّ هَانِئٍ فَإِنَّهَا قَالَتْ إِنَّ النَّبِيَّ ﷺ دَخَلَ بَيْتَهَا يَوْمَ فَتْحِ مَكَّةَ فَاغْتَسَلَ وَصَلَّى ثَمَانِيَ رَكَعَاتٍ فَلَمْ أَرَ صَلاَةً قَطُّ أَخَفَّ مِنْهَا غَيْرَ أَنَّهُ يُتِمُّ الرُّكُوعَ وَالسُّجُودَ