Sharayk bin 'Abdullah شريك بن عبد الله النخعي · The Chapters on Marriage

the Prophet said: “Do not marry women for their beauty for it may lead to their doom. Do not marry them for their wealth, for it may lead them to fall into sin. Rather, marry them for their religion. A black slave woman with piercings who is religious is better.”

the Messenger of Allah said: “Any woman whose marriage is not arranged by her guardian, her marriage is invalid, her marriage is invalid, her marriage is invalid. If (the man) has had intercourse with her, then the Mahr belongs to her in return for his intimacy with her. And if there is any dispute then the ruler is the guardian of the one who does not have a guardian.”

A man among Banu Fazarah got married for a pair of sandals, and the Prophet permitted his marriage.