Hadith 8:151
'Aishah (May Allah be pleased with her) reported:
The Messenger of Allah (ﷺ) used to perform four Rak'ah of Duha prayer (at the forenoon) and would add to them whatever Allah wished. [Muslim] .
وعن عائشة رضي الله عنها قالت: كان رسول الله صلى الله عليه وسلم يصلي الضحى أربعًا ويزيد ما شاء الله . ((رواه مسلم))