(Ar-Room) 30 : 52
فَإِنَّكَ لَا تُسْمِعُ الْمَوْتَىٰ وَلَا تُسْمِعُ الصُّمَّ الدُّعَاءَ إِذَا وَلَّوْا مُدْبِرِينَ

Then indeed, you will not make the dead hear, nor will you make the deaf hearing the call when they have turned their backs retreating.

This verse is repeated in verse 27: 80. See explanation 2: 6-7; 6: 36 and 10: 42.