When the Messenger of Allah ﷺ entered Mecca on the day of its conquest, they screened him from view. Water was brought to him and he bathed, then he prayed eight rakahs of the Duha prayer. No one saw him pray it after that.
حدثنا يعلى بن عبيد قال حدثنا إسماعيل يعني ابن أبي خالد عن أبي صالح
لما دخل رسول الله ﷺ يوم فتح مكة حجبوه وأتي بماء فاغتسل ثم صلى الضحى ثماني ركعات ما رآه أحد بعدها صلاها