AR RA'D — Ayat 14

لَهُ دَعْوَةُ الْحَقِّ وَالَّذِينَ يَدْعُونَ مِن دُونِهِ لاَ يَسْتَجِيبُونَ لَهُم بِشَيْءٍ إِلاَّ كَبَاسِطِ كَفَّيْهِ إِلَى الْمَاء لِيَبْلُغَ فَاهُ وَمَا هُوَ بِبَالِغِهِ وَمَا دُعَاء الْكَافِرِينَ إِلاَّ فِي ضَلاَلٍ

To Him [alone] is the supplication of truth. And those they call upon besides Him do not respond to them with a thing, except as one who stretches his hands toward water [from afar, calling it] to reach his mouth, but it will not reach it [thus]. And the supplication of the disbelievers is not but in error [i.e. futility].