Surah Ar-Ra'd, ayah 14

لَهُۥ دَعۡوَةُ ٱلۡحَقِّۚ وَٱلَّذِينَ يَدۡعُونَ مِن دُونِهِۦ لَا يَسۡتَجِيبُونَ لَهُم بِشَيۡءٍ إِلَّا كَبَٰسِطِ كَفَّيۡهِ إِلَى ٱلۡمَآءِ لِيَبۡلُغَ فَاهُ وَمَا هُوَ بِبَٰلِغِهِۦۚ وَمَا دُعَآءُ ٱلۡكَٰفِرِينَ إِلَّا فِي ضَلَٰلٖ ١٤

Lahū da'watul-haqqi walladhīna yad'ūna min dūnihī lā yastajībūna lahum bishay'in illā kabāsiti kaffayhi ilal-mā'i liyablugha fāhu wamā huwa bibālighihī wamā du'ā'ul-kāfirīna illā fī dalāl

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].⁶³⁴ And the supplication of the disbelievers is not but in error [i.e., futility].