(Isra) 17 : 56
قُلِ ادْعُوا الَّذِينَ زَعَمْتُمْ مِنْ دُونِهِ فَلَا يَمْلِكُونَ كَشْفَ الضُّرِّ عَنْكُمْ وَلَا تَحْوِيلًا
You say: "You invoke those whom you have claimed besides Him, for they don’t possess the removal of adversity from you or transfer".
See explanation 6: 94; 7: 192-200; 10: 18 and 104-106.