Disaster for a
    family because of a father who does not fear Allaah
Question

                I, my younger sister and brother used to
      live with our father after we moved to the US. He had already divorced 3 women including
      my mother. We found out that all he cares about is money. He treated us well as long as we
      gave him money. My younger brother left us because of his rude and greedy behaviour. 
      We found out that he drinks beer and alcohol and does Zinaah. He didn't even care about
      us. He brought women even in our presence. We tried to stop him but he would abuse us
      verbally and even beat us. He even accuses my mother of doing haram things and disowns his
      own son from his fatherhood. He does this just because my  brother refused to give
      him his paycheck. He never persuaded us to perform Salat and fast during Ramadan, and
      neither he did it himself. Instead he asked me to drink beer and I drank beer a couple of
      times. 
      I'm married now Alahumdulillah. I and my husband do our Salat regularly and I fast to
      compensate for the days I didn't fast during Ramadan. I always repent to Allah to forgive
      me for the bad things I did intentionally and unintentionally. My husband has been helping
      me with all this. 
      His behaviour with my younger sister got worst after I moved to another city after getting
      married. He asked her to drink beer with him and his girl friend but she harshly refused.
      She had to lock door to sleep. She didn' t trust him at all. So I asked her to live with
      us as she didn t have any other place to go (My mother lives in another country).
      I' ve questions in this regards. 
      1. My husband says that he will never let him visit us or us visit him until he gives all
      his haram habits and truly repent to ALLAH. Is this right ? 
      2. What should we do to make him give up all his bad habits? 
      3. I know it's not right for my sister to live with us but what is the ruling in this
      situation ?
Praise be to Allah.If the situation is as you describe, then what can we
    say about the immense disaster of a father who does not pray or fast, who drinks
    intoxicants and commits immoral acts, who neglects his family and calls them to do evil
    deeds? Laa hawla wa laa quwwata illa Billaah; hasbunaa Allaah wa niam al-wakeel;
    innaa Lillaahi wa innaa ilayhi raajioon (There is no strength and no power except
    with Allaah; sufficient unto us is Allaah and He is the best Disposer of affairs; verily
    we belong to Allaah and unto Him we will return). [These are duaas
    recited by Muslims when faced with calamity  Translator] Does he not
    know that Allaah says (interpretation of the meaning):
     Ward off from yourselves and your families a Fire
    (Hell) whose fuel is men and stones, over which are appointed angels stern (and) severe,
    who disobey not (from executing) the Commands they receive from Allaah, but do that which
    they are commanded.[al-Tahreem 66:6]
Does he not know that the Prophet 
 (peace and blessings of Allaah
    be upon him) said:
There is no person to whom Allaah has given responsibility and
    dies neglecting that responsibility, but Allaah will deny him Paradise. (Reported
    by Muslim, 203)
    Every one of you is a shepherd and every one of
    you is responsible for his flock (those under his care) a man is the shepherd over
    the members of his household and he is responsible for them
Allaah will ask every shepherd about that for which
    he was responsible. (Reported by al-Tirmidhi, 1627).
    There is no person to whom Allaah has given
    responsibility over others and he failed to take care of them by advising them sincerely,
    but he will never smell the fragrance of Paradise. (Reported by al-Bukhaari,
    6617).
    We ask Allaah to bring this man back to the truth.
Know that even though your father has caused you so much suffering, it
    is not permissible for you to sever your ties with him, in spite of all that you have
    mentioned. You must keep in touch with him and treat him kindly. You and your siblings
    should treat him kindly and express your fears for him and your love for him, because of
    his rights as a father, and because severing ties with him and ignoring him in a hostile
    manner will only make matters worse. Neither you nor your siblings should obey him in sin.
    You mention in your message that your father used to treat you well when you gave him
    money, so if giving him money will put an end to his bad treatment and make things go back
    to normal, so that you will treat one another well and he will see love and sacrifice on
    your part, then why not do that? This is provided that he does not use this money to buy
    haraam things. Try to restrain your anger and forget his past shortcomings in his
    behaviour towards you. Try to honour him and show love towards him. Visit him and look
    after him. Maybe this will stir up true fatherly feelings in him, and maybe stop him from
    doing haraam things. Dont even think of severing ties with him. Get in touch with
    your brother and ask him to get back in touch with his father. Know that your being
    patient with him is a kind of jihaad, which will be rewarded. The idea of not visiting him
    until he repents is not right, because Allaah says (interpretation of the meaning):But if they (both) strive with you to make you join in worship with Me others
    that of which you have no knowledge, then obey them not, but behave with them in the world
    kindly, and follow the path of him who turns to Me in repentance and in obedience. Then to
    Me will be your return, and I shall tell you what you used to do. [Luqmaan 31:15]
Visit him, so long as it does not cause you unbearable harm or make you
    do wrongful things. Know that one of the ways to make a sinner repent is having someone
    who will call him to repent and remind him of Allaah. A child has to treat his parents
    honourably even if they are mushrikeen. Al-Qurtubi said:
The aayah indicates that one should honour kaafir parents as much
    as possible by spending on them if they are poor, by speaking kindly to them, and by
    calling them to Islam.
With regard to your sister, she must be careful when she stays with her
    immoral father. Locking herself in is a good safety measure and may well be essential at
    times. If she does not feel safe in the home of this immoral father, she should go and
    live somewhere else where she can be safe, such as in your house, if it is suitable. Maybe
    Allaah will give her a righteous husband who will take care of her and protect her.
We ask Allaah to guide your father and to bring him out of darkness
    into light. May He forgive you for your sin and help your sister and all of us to adhere
    steadfastly to the truth. May Allaah bless our Prophet Muhammad.