He drives a taxi and takes passengers to bars and night clubs
Question

                My husband drive a taxi in canada.he has to drop the customers to brs and night clubs and also sometime to pick them. is his income is halal?.
Praise be to Allah.It is haraam to go to bars 
    where alcohol is sold, and night clubs which involve immoral and sinful 
    things. It is not permissible to help anyone with regard to that, or to take 
    him in his car for free or for payment, because that is helping in sin. 
    Allaah says (interpretation of the meaning): 
“Help you one another in 
    Al‑Birr and At‑Taqwa (virtue, righteousness and piety); but do not help one 
    another in sin and transgression. And fear Allaah. Verily, Allaah is Severe 
    in punishment”
[al-Maa’idah 5:2]
Based on that, if your 
    husband knows that the passenger wants to go to a haraam place, it is not 
    permissible for him to take him. 
Similarly, he should not 
    wait for the people who are coming out of those haraam places, because that 
    is facilitating their coming and going. But if one of them stops him and 
    asks him to take him home or to some permissible place, he may take him 
    there, because that does not involve what we have mentioned above about 
    helping in sin. 
See also the answer to 
    question no. 75443 and
    10398 
And Allaah knows best.