She had an operation to have her tubes tied before she became Muslim; does she have to have them untied now?
Question

                I have been Muslim for 2 years and before becoming Muslim I had my tubes tied 3 years ago. I am now married and my husband and I would like to know if we should have my tubes untied to allow procreation? We are prepared to do so if we have sound evidence.
Praise be to Allah.Islam 
    encourages us to reproduce and have many children. A man came to the 
    Messenger of Allaah  and said: I have found a woman of good lineage, but 
    she cannot have children. Should I marry her? He told him not to do that. He 
    came to him a second time and he told him not to do that. Then he came to 
    him a third time, and he told him not to do that and said: “Marry the one 
    who is fertile and loving, for I will be proud of your numbers.” Narrated by 
    Abu Dawood (2050), al-Nasaa’i (3227); classed as saheeh by al-Albaani in 
    Saheeh Abi Dawood. 
This is one 
    of the aims of marriage, which is to produce a Muslim child who will be 
    given a righteous upbringing and who will benefit his family and his nation. 
    This is one of the blessings whose value cannot be known except by the one 
    who is deprived of it. Allaah has made children an adornment of life, as He 
    says (interpretation of the meaning: 
“Wealth 
    and children are the adornment of the life of this world. But the good 
    righteous deeds that last, are better with your Lord for rewards and better 
    in respect of hope”
[al-Kahf 
    18:46]
Secondly: 
It is not 
    permissible for a woman to prevent having children except in cases of real 
    necessity, such as if pregnancy poses a danger to her life. 
It says in a 
    report of the Islamic Fiqh Council, issued during its fifth conference in 
    1409 AH/1988 CE: 
Firstly: it 
    is not permissible to promulgate a law which limits a couple’s freedom to 
    have children. 
Secondly:  
    It is haraam to remove the ability to produce children for both the man and 
    the woman, which is known as sterilization, except in cases of necessity as 
    defined by sharee’ah.  
Thirdly: it 
    is permissible to stop reproduction temporarily so as to space out 
    pregnancies, or stop them for a specific length of time, if there is a 
    legitimate shar’i need to do so, if that is decided by both spouses with 
    mutual consultation and agreement, so long as that will not result in any 
    harm and so long as the means used are permissible according to Islam, and 
    there is no transgression against an existing pregnancy. And Allaah knows 
    best. 
End quote 
    from Majallat al-Majma’ (5/1/748). 
Based on 
    that, it is not permissible to have one’s tubes tied in order to prevent 
    pregnancy permanently, except in cases of necessity. Now you have to have 
    them untied if that will not result in harm.  
See also 
    question no. 20168. 
And Allaah 
    knows best.