I heard Anas bin Malik al-Ansari saying, "An Ansari man, who was very fat, said to the Prophet, 'I am unable to present myself for the prayer with you.' He prepared a meal for the Prophet (ﷺ) and invited him to his house. He washed one side of a mat with water and the Prophet (ﷺ) offered two Rakat on it." So and so, the son of so and so, the son of Al-Jarud asked Anas, "Did the Prophet (ﷺ) use to offer the Duha prayer?" Anas replied, "I never saw him praying (the Duha prayer) except on that day."
Sahih al-Bukhari Book 19, Hadith 57
← Previous Hadith My friend (the Prophet) advised me to do three things and I shall not leave them till I die, these are: To fast three days every month, to offer the Duha prayer, and to offer witr before sleeping.

Sahih al-Bukhari Book 19, Hadith 56 Next Hadith → I remember ten Rakat of Nawafil from the Prophet, two Rakat before the Zuhr prayer and two after it; two Rakat after Maghrib prayer in his house, and two Rakat after 'Isha' prayer in his house, and two Rakat before the Fajr prayer and at that time nobody would enter the house of the Prophet.

Hafsa told me that the Prophet (ﷺ) used to offer two Rakat after the call maker had made the Adhan and the day had dawned.

Sahih al-Bukhari Book 19, Hadith 58