The ruling on a father preventing his daughter from marriage in order to keep her salary

Question:
May Allah reward you and bless you. This sister, who has used the letters alif and nun as a code for her name, says: We are a group of girls living with our father. We have no male siblings. Our father rejects suitable and capable suitors because he wants our salaries. She says: A group of these pious young men have proposed to us, but he refuses and puts up obstacles. What is the ruling on this? And what is the advice for my father?

Answer:
This ruling is strictly forbidden; because it is oppression of the woman, and oppression of a woman is preventing her from marrying a suitable match she has accepted. This is oppression, and it is one of the major sins. The father must fear Allah (Mighty and Majestic) and follow the saying of the Messenger (peace and blessings be upon him): "When there comes to you one whose religion and trustworthiness you are pleased with, marry her to him" . The money he takes, as the questioner mentioned, in exchange for this oppression is forbidden; it is forbidden money for him. This is regarding husbands; what about the right of someone other than the husband?
It is not permissible for the guardian to practice *i'dal* against his ward and harm her. He adds to this that he takes her money, detains her from suitors, and causes her to miss the opportunity of marriage and seeking offspring, in order to exploit her and invest in her. This is a betrayal of the trust. For among the duties of the trust is that he marries his ward to a suitable suitor whom she accepts, because Allah entrusted him with her and gave him guardianship over her. Yes.