He broke wind whilst doing ghusl from janaabah; is his ghusl invalidated?
Question

                If a person passes wind whilst doing ghusl from janaabah, does that invalidate the ghusl?.
Praise be to Allah.
    Passing wind is one of the things that invalidate wudoo’ but 
    it is not one of the things that invalidate ghusl. Based on this, if a 
    person touches his private part, urinates or passes wind whilst doing ghusl, 
    he should complete his ghusl, then do wudoo’ afterwards. 

    The basic principle is that if ghusl is done following major 
    impurity, then it suffices for wudoo’. If a person is junub (impure 
    following sexual activity) and he does ghusl, then that suffices for wudoo’, 
    because Allaah says (interpretation of the meaning): 
“If you are in a state of 
    Janaaba (i.e. after a sexual discharge), purify yourselves (bathe your whole 
    body)”

    [al-Maa'idah 5:6]

    He does not have to do wudoo’ after doing ghusl, but if one 
    of the things that invalidate wudoo’ takes place whilst doing ghusl or 
    afterwards, then he has to do wudoo’ for prayer. But if he does not break 
    his wudoo’ then his ghusl from janaabah suffices for wudoo’, whether he did 
    wudoo’ before ghusl or not. But it is essential to pay attention to rinsing 
    the mouth and nose, because these are essential for both wudoo’ and ghusl. 

    Majmoo’ Fataawa al-Shaykh Ibn ‘Uthaymeen, 
    11/228 

    And Allaah knows best.