Wadah bin 'Abdullah al-Yashkari وضاح بن عبد الله اليشكري أبو عوانة · The Book on Marriage

"A man named Abu Shu'aib came to a slave of his, who was a butcher, and said: 'Prepare some food for me that will be sufficient for five, for I have seen hunger in the face of the Messenger of Allah.' So he prepared some food. Then he sent a message to the Prophet inviting him and those who were sitting with him. When the Prophet stood, he was followed by a man who was not with them when they…

"A woman from Banu Fazarah was married for (the dowry of) two sandals. So the Messenger of Allah said to her: 'Do you approve of (exchanging) yourself and your wealth for two sandals?' She said: 'Yes.'" He said: "So he permitted it."