Buying permissible things in places where haraam things are being sold
Question

                Is it permissible for a Muslim to buy halaal meat from a place where haraam meat is also sold, if the meat (both kinds) is prepared separately and stored in separate refrigerators? Is it permissible to buy halaal foods from large stores which also sell alcohol in a separate section of the store and the owner of the store is not Muslim?
Praise be to Allah.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’
      [al-Maa’idah 5:2]
      
      
 So
      it is not permissible for a Muslim to help anyone in doing anything that
      involves sin and transgression and violating the limits set by Allaah. So
      if a Muslim is in a position where he has the choice and it is easy for
      him to find someone who sells only halaal foods and keeps away from haraam
      things such as pork etc., then he should deal with that person and not
      with the one who sells both halaal and haraam such as pork, alcohol and so
      on. But if that is not possible, then it is permissible for the Muslim to
      buy halaal meat and permissible foods from him so long as the distinction
      between what is halaal and what is haraam is clear, because Allaah says
      (interpretation of the meaning):
      
      
“So
      keep your duty to Allaah and fear Him as much as you can “ [al-Taghaabun
      64:16]
And
      Allaah is the source of strength. May Allaah bless our Prophet Muhammad and his family and companions, and grant them peace.