Sahih Bukhari
Hadith #670
Narrated Anas bin Seereen:I heard Anas saying, ""A man from Ansar said to the Prophet, 'I cannot pray with you (in congregation).' He was a very fat man and he prepared a meal for the Prophet (ﷺ) and invited him to his house. He spread out a mat for the Prophet, and washed one of its sides with water, and the Prophet (ﷺ) prayed two rak`at on it."" A man from the family of Al-Jaruid [??] asked, ""Did the Prophet (ﷺ) used to pray the Duha (forenoon) prayer?"" Anas said, ""I did not see him praying the Duha prayer except on that day