Musannaf Ibn Abi Shaybah 16763 — A woman whose guardian refuses

Ziyad bin Ilaqah said: A man sent a marriage proposal to a previously married woman of Banu Layth. Her father refused to marry her off. The woman wrote to Sayyiduna Uthman (may Allah be pleased with him), and Sayyiduna Uthman (may Allah be pleased with him) wrote back ordering: If that man is a suitable match (kuf') for the woman, then tell her father to marry her off. If he does not marry her off, then marry her off anyway.