Musnad Abu Ya'la al-Mawsili 147:32

Shayban ibn Farrukh narrated to us, Muhammad ibn Ziyad al-Burjami narrated to us, from Abu al-Zilal, from Anas ibn Malik, from his mother, she said: She had a sheep, and she collected from its ghee into a skin container until she filled the container. Then she sent it with a stepdaughter and said, "O stepdaughter, deliver this container to the Messenger of Allah (may Allah bless him and grant him peace) so that he may use it as a condiment." The stepdaughter set off with it until she came to the Messenger of Allah (may Allah bless him and grant him peace) and said, "O Messenger of Allah, a container of ghee that Umm Sulaym sent to you." He said, "Empty the container for her." So she emptied the container and handed it back to her. She departed with it. Umm Sulaym came and saw the container full, dripping. Umm Sulaym said, "O stepdaughter, did I not command you to take it to the Messenger of Allah (may Allah bless him and grant him peace)?" She said, "I did indeed do so; if you do not believe me, then go and ask the Messenger of Allah (may Allah bless him and grant him peace)." Umm Sulaym set off, and with her was the stepdaughter. She said, "O Messenger of Allah, I sent to you with her a container containing ghee." He said, "You did indeed; she brought it." She said, "By the One who sent you with guidance and the religion of truth, it is full, dripping with ghee." He said, so the Messenger of Allah (may Allah bless him and grant him peace) said to her, "Are you amazed that Allah has fed you just as you fed His Prophet? Eat and feed others." She said, "So I came to the house and distributed into a bowl of ours such and such, and I left in it what we used as a condiment for a month or two."