She came in to see the Prophet ﷺ on the day of the conquest of Mecca while he was bathing, and Fatimah was screening him with a garment. He was bathing in a large bowl that still had traces of dough in it. She said, "He then prayed the Duha prayer once he had finished his bath, but I do not know how many units he prayed."
أخبرنا محمد بن يحيى بن محمد قال حدثنا محمد بن موسى بن أعين قال حدثنا أبي عن عبد الملك بن أبي سليمان عن عطاء قال
أنها دخلت على النبي ﷺ يوم فتح مكة وهو يغتسل قد سترته بثوب دونه في قصعة فيها أثر العجين قالت فصلى الضحى فما أدري كم صلى حين قضى غسله
[Hasan] Tabarani transmitted it, 24/428, no. 1044, from the hadith of Musa bin Ayun through the same chain, and it has a corroborating witness mentioned previously at no. 241.