Indeed, you will not make the dead hear, nor will you make the deaf hear the call when they have turned their backs retreating.
The Saheeh International Quran Translation
إِنَّكَ لَا تُسْمِعُ ٱلْمَوْتَىٰ وَلَا تُسْمِعُ ٱلصُّمَّ ٱلدُّعَآءَ إِذَا وَلَّوْا۟ مُدْبِرِينَIndeed, you will not make the dead hear, nor will you make the deaf hear the call when they have turned their backs retreating.