Making du’aa’ in prayer in a language other than Arabic
Question

                If I don't speak Arabic and I want to make Du'aa while I am in prayers. For example, in Tahajud while the prostration is long Can I make Du'aa in my language until I learn Arabic.
Praise be to Allah.Yes, 
          it is permissible to make du’aa’ in a language other than Arabic, if 
          one does not speak it. But the Muslim has to learn enough Arabic to 
          do the acts of worship properly. And Allaah knows best.