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