Mukhtasar Bukhari (Abridged) 402 — Should the imam pray with those

Narrated Anas (may Allah be pleased with him): A man from the Ansar said to the Prophet (peace and blessings of Allah be upon him), "I am unable (due to excuse) to pray with you," and he was a stout man. So he prepared food for the Prophet (peace and blessings of Allah be upon him) and invited him to his house. He spread a mat for the Prophet (peace and blessings of Allah be upon him) and washed one of its corners. The Prophet (peace and blessings of Allah be upon him) prayed two rak‘ahs on it. Meanwhile, a man from the family of Jarud asked Anas (may Allah be pleased with him), "Did the Prophet (peace and blessings of Allah be upon him) use to pray the Duha prayer?" Anas (may Allah be pleased with him) replied, "I never saw him pray it except on that day."