From Sahih Bukhari (Hadith 1103):
Narrated Ibn Abu Laila:Only Um Hani told us that she had seen the Prophet (ﷺ) offering the Duha (forenoon prayer). She said, "On the day of the conquest of Mecca, the Prophet (ﷺ) took a bath in my house and offered eight rak`at. I never saw him praying such a light prayer but he performed perfect prostration and bowing
Reference: Bukhari 1103