[Machine] I did not see the Messenger of Allah ﷺ pray the Sunnah of Dhuha, but I do pray it and it has been narrated by Ma'mar. And there is nothing that people have innovated that I love more than it.  

مَا رَأَيْتُ رَسُولَ اللهِ ﷺ سَبَّحَ سُبْحَةَ الضُّحَى وَإِنِّي لَأُسَبِّحُهَا زَادَ مَعْمَرٌ فِي رِوَايَتِهِ وَمَا أَحْدَثَ النَّاسُ شَيْئًا أَحَبَّ إِلَيَّ مِنْهَا  

[Machine] Did the Prophet ﷺ used to pray the Duha prayer? She said, "No, except for a narration from Ibn Matr, unless he came from his hiding place."  

ؓ هَلْ كَانَ النَّبِيُّ ﷺ يُصَلِّي الضُّحَى؟ قَالَتْ لَا إِلَّا أَنْ يَجِئَ مِنْ مَغِيبِهِ لَفْظُ حَدِيثِ ابْنِ مَطَرٍ  

I have never seen the Messenger of Allah ﷺ observing the supererogatory prayer of the forenoon, but I observed it. And if the Messenger of Allah ﷺ abandoned any act which he in fact loved to do, it was out of fear that if the people practised it constantly, it might become obligatory for them. (Using translation from Muslim 718)   

مَا رَأَيْتُ رَسُولَ اللهِ ﷺ يُصَلِّي سُبْحَةَ الضُّحَى قَطُّ وَإِنِّي لَأُسَبِّحُهَا وَإِنْ كَانَ رَسُولُ اللهِ ﷺ لَيَدَعُ الْعَمَلَ وَهُوَ يُحِبُّ أَنْ يَعْمَلَهُ خَشْيَةَ أَنْ يَعْمَلَ بِهِ النَّاسُ فَيُفْرَضَ عَلَيْهِمْ لَفْظُ حَدِيثِ يَحْيَى