None informed us that he saw the Prophet ﷺ offering the Duha (i.e. forenoon) prayer, except Um Hani who mentioned that the Prophet ﷺ took a bath in her house on the day of the Conquest (of Mecca) and then offered an eight rakʿat prayer. She added, "I never saw the Prophet ﷺ offering a lighter prayer than that prayer, but he was performing perfect bowing and prostrations."  

أَنَّهُ رَأَى النَّبِيَّ ﷺ يُصَلِّي الضُّحَى غَيْرَ أُمِّ هَانِئٍ فَإِنَّهَا ذَكَرَتْ أَنَّهُ يَوْمَ فَتْحِ مَكَّةَ اغْتَسَلَ فِي بَيْتِهَا ثُمَّ صَلَّى ثَمَانِيَ رَكَعَاتٍ قَالَتْ لَمْ أَرَهُ صَلَّى صَلاَةً أَخَفَّ مِنْهَا غَيْرَ أَنَّهُ يُتِمُّ الرُّكُوعَ وَالسُّجُودَ