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Surah 17. Al-Israa
Ayah 56 - 57
56 قُلِ ٱدْعُوا۟ ٱلَّذِينَ زَعَمْتُم مِّن دُونِهِۦ فَلَا يَمْلِكُونَ كَشْفَ ٱلضُّرِّ عَنكُمْ وَلَا تَحْوِيلًا
57 أُو۟لَـٰٓئِكَ ٱلَّذِينَ يَدْعُونَ يَبْتَغُونَ إِلَىٰ رَبِّهِمُ ٱلْوَسِيلَةَ أَيُّهُمْ أَقْرَبُ وَيَرْجُونَ رَحْمَتَهُۥ وَيَخَافُونَ عَذَابَهُۥٓ ۚ إِنَّ عَذَابَ رَبِّكَ كَانَ مَحْذُورًا
[56-57] Say to them, "You may invoke for help those deities whom you consider to be (your helpers) beside Allah: They will not be able to relieve you of any trouble nor change it."64 In fact those whom these people invoke for help themselves seek means of approach to their Lord and vie with one another to be nearer to Him and hope for His mercy and fear His chastisement.65 The fact is that the chastisement of your Lord is a thing to be dreaded.
64This warning helps to elaborate the Doctrine of Tauhid and negate shirk. According to this, shirk is not confined merely to falling prostrate before any other than Allah but it is also shirk to pray to or invoke the help of any other than Allah; for praying to or calling for help any other than Allah is in reality a kind of worship. Therefore, the one who invokes for help any other than Allah is as much guilty of shirk as the worshiper of an idol. This verse also shows clearly that none other than Allah has any power to attend to prayers and relieve any one of trouble or alter any one's bad condition. Hence, if one believes that some one other than Allah has any power, he shall be guilty of shirk.
65The words of the text are a clear proof that the deities and the helpers referred to in this verse were not idols of stone but were either angels or dead saints. It is clearly implied in this that no prophet, no saint and no angel, whom the people invoke for help, has the power to hear prayers and help anyone. They themselves hope for mercy from Allah and dread His punishment and vie with one another in seeking means for nearness to Him.