Quran

فَإِنَّكَ لَا تُسۡمِعُ ٱلۡمَوۡتَىٰ وَلَا تُسۡمِعُ ٱلصُّمَّ ٱلدُّعَآءَ إِذَا وَلَّوۡاْ مُدۡبِرِينَ

So indeed, you will not make the dead hear, nor will you make the deaf hear the call when they turn their backs, retreating