She said to her husband: “You are to me like my father”
Question

                I had an argument with my husband, and at the moment of anger I declared that he was haraam to me and I said to him: “You are to me like my father, until the Day of Resurrection.” I repeated that several times. What should I do? Should I ask my husband for a divorce or what? I am confused about my situation.
Praise be to Allah.If a Muslim declares 
    something to be haraam for himself that Allaah has permitted, this comes 
    under the same ruling as an oath (yameen). 

    The evidence for that is the verse in which Allaah says 
    (interpretation of the meaning): 

    “O Prophet! Why do you forbid (for yourself) that which 
    Allaah has allowed to you, seeking to please your wives? And Allaah is 
    Oft‑Forgiving, Most Merciful.
2. Allaah has already 
    ordained for you (O men) the absolution from your oaths. And Allaah is your 
    Mawlaa (Lord, or Master, or Protector) and He is the All‑Knower, the 
    All‑Wise”

    [al-Tahreem 66:1-2]

    Al-Sa’di (may Allaah have mercy on him) said in his 
    Tafseer (p. 1035): 

    This is a rebuke from Allaah to His Prophet Muhammad  
    (peace and blessings of Allaah be upon him), when he declared that his 
    concubine Maryah and drinks of honey were forbidden to him, in order to 
    please some of his wives, as narrated in the well-known story, whereupon 
    Allaah revealed these verses.  

    The fact that he forbade these things to himself led to the 
    revelation of a general ruling which applies to the entire ummah. Allaah 
    said: “Allaah has already ordained for you (O men) the absolution from 
    your oaths”. This is general and applies to all oaths sworn by the 
    believers. 

    Everyone who declares that something permissible is forbidden 
    to him, such as food, drink or concubines, or swears an oath by Allaah that 
    he will do something or nor do something, then breaks that oath or wants to 
    break it, has to offer the expiation mentioned. 

    You have to offer kafaarat yameen for your declaring that 
    your husband is forbidden to you like your father. This expiation means 
    feeding ten poor persons, giving each one a kilo and a half of staple food, 
    or clothing them, giving a garment to each one, or freeing a believing 
    slave. If you cannot do any of these three things, then you have to fast for 
    three days. Your husband is not forbidden to you. And you have to repent to 
    Allaah from that, because it is not permissible for a Muslim to forbid to 
    himself something that has been permitted by Allaah. 
From Fataawa al-Lajnah al-Daa’imah 
    li’l-Ifta’, 23/189.