Is a father's refusal to marry off his daughter to a suitor who meets all the Sharia-compliant and moral conditions, and whom both wish to marry, considered 'adhl (unjust prevention of marriage) – thereby permitting the intervention of the concerned authorities – given that the family's desire is for her to obtain Saudi citizenship, and what are the procedures for dealing with such a situation?

What you mentioned about the girl's family should not prevent her from marrying a suitable man, for the Prophet, peace and blessings be upon him, said: "If there comes to you one whose religion and character you approve, then marry him." Parents are naturally inclined to tenderness and compassion, and a father is not considered to be preventing his daughter from marriage by rejecting a suitor unless his intention is to harm her. We advise against insisting on marrying a specific person, for there may be good and benefit in marrying someone else.