So indeed, you will not make the dead hear, nor will you make the deaf hear the call when they turn their backs, retreating.
The Saheeh International Quran Translation
فَإِنَّكَ لَا تُسْمِعُ ٱلْمَوْتَىٰ وَلَا تُسْمِعُ ٱلصُّمَّ ٱلدُّعَآءَ إِذَا وَلَّوْا۟ مُدْبِرِينَSo indeed, you will not make the dead hear, nor will you make the deaf hear the call when they turn their backs, retreating.