Muwatta Imam Malik (Riwayat Ibn al-Qasim)

And with this chain of narration, it is narrated from Sayyiduna Anas (may Allah be pleased with him) that his grandmother, Sayyida Maleekah (may Allah be pleased with her), prepared food for the Messenger of Allah (peace and blessings be upon him) and invited him. The Messenger of Allah (peace and blessings be upon him) ate from it and then said: "Stand up! I will lead you in prayer." Anas (may Allah be pleased with him) said: I got up and went to my mat, which had become black due to lying for a long time, and I sprinkled water on it. Then the Messenger of Allah (peace and blessings be upon him) stood up, an orphan and I formed a row behind him, and the old woman stood behind us (in a separate row). The Messenger of Allah (peace and blessings be upon him) led us in two (nafl) units of prayer and then concluded with salam.