Is a master compelled to marry a female slave who is half-free, a contractually freed slave (*mukataba*), or a mother of a child (*umm walad*) if she requests marriage?

Primary text

If a female slave who is half-free, a *mukataba*, or an *umm walad* requests marriage from her master, he is compelled to marry her because he is her guardian (*wali*), and thus he is compelled to marry her, similar to free women.