Mu'adhahAl-'Adawiyyah said:
"I asked 'Aishah: 'Did the Prophet (ﷺ)pray Duha?' She said: 'Yes; four (Rak'ah) and he would addwhateverAllah willed.'" (DE)
English reference (DE): Vol. 1, Book 5, Hadith 1381 (DE)
Arabic reference (DE): Book 5, Hadith 1444 (DE)