I asked 'Aishah: Did the Messenger of Allah (ﷺ) pray in the Duha? She replied: No, except when he returned from his journey. I then asked: Did the Messenger of Allah (ﷺ) recite the surahs combining each other? She said: He would do so in the mufassal surahs.
Sunan Abi Dawud Book 5, Hadith 43
← Previous Hadith No one told us that the Prophet (ﷺ) had offered Duha prayer except Umm Hani. She said that the Prophet (ﷺ) had taken bath in her house on the day of the Conquest of Mecca and prayed eight rak'ahs. But no one saw him afterwards praying these rak'ahs.

Sunan Abi Dawud Book 5, Hadith 42 Next Hadith → The Messenger of Allah (ﷺ) never offered prayer in the forenoon, but I offer it. The Messenger of Allah (ﷺ) would give up an action, though he liked it to do, lest the people should continue it and it is prescribed for them.

Sunan Abi Dawud Book 5, Hadith 44