Sunan Abi Dawud 612

Anas b. Malik said that his grandmother Mulaikah the Messenger of Allah (ﷺ) to take meals which she prepared for him. He took some of it and prayed. He said :Get up, I shall lead you in prayer. Anas said: I got up and took a mat which had become black on account of long use. I then washed it with water. The Messenger of Allah (ﷺ) stood upon it. I and the orphan (Ibn Abi Dumairah, the freed slave of the prophet) stood in a row behind him. The old women stood behind us. He then led us in two raka'at of prayer and left