He had anal intercourse with a foreign woman but they have repented. Is it permissible for them to get married?
Question

                We had anal intercourse, but we repented and regretted. We love each other very much we cannot separate. We want to marry and live a happy life. Is it permissible for us to get married? 

We follow the ibadhi madhab, and it prohibits marriage between a man  and a woman who committed adultry even if they repent. The evidence for this is that Umar ibn al-khattab separated a man who married a woman during her ‘iddah and said: “they shall never be togeather”, another evidence narrated by Ali, A’esha, and albaraa ben azeb, that “if a man and awoman who committed adultry got married, their relationship remains adultry forever”. Trust cannot be there between two who tested each other before marriage. What is your opinion?.
Praise be to Allah.
    Firstly: 

    You should understand that looking for the right opinion on 
    practical fiqhi matters is something good, and it indicates that a person is 
    seeking the truth that Allaah has enjoined. Even better than this is that a 
    Muslim should look for the correct belief that will save him from the 
    misguided sects which the Prophet  (peace and blessings of Allaah be 
    upon him) spoke of. He said that there would be seventy-two sects, “all of 
    which will be in the Fire” meaning that they are misguided and deserve this 
    warning of Hell. 

    If you both regret what you did and have repented sincerely, 
    then it is permissible for you to get married, and there is no reason why 
    you should not do so. 

    As for what you say about ‘Umar ibn al-Khattaab preventing 
    the one who married a woman during her ‘iddah from ever marrying her, it 
    seems – if this is a sound report – that this was a punishment (ta’zeer) to 
    the one who committed a sin, and it was not a confirmation of a shar’i 
    ruling that this is haraam. 

    What you have quoted from some of the Sahaabah, that they 
    ruled that a couple who committed zina and then get married would remain 
    adulterers forever, may be understood as applying to those who did not 
    repent. 

    Ibn Hazm (may Allaah have mercy on him) said: 

    It was narrated from Ibn Mas’ood that he said concerning the 
    one who marries a woman after committing zina with her: They are still 
    adulterers. Then he narrated that Saalim ibn ‘Abd-Allaah ibn ‘Umar was asked 
    about a man who committed zina with a woman then married her. He said: Ibn 
    Mas’ood was asked about that and he said: “And He it is Who accepts 
    repentance from His slaves” [al-Shoora 42:25]. 

    Ibn Hazm said:  

    The two opinions (of Ibn Mas’ood) are in harmony, because he 
    only allowed marrying that woman after repentance. End quote. 

    Al-Muhalla (9/63) 

    And Allaah knows best.