فَإِنَّكَ لا تُسمِعُ المَوتىٰ وَلا تُسمِعُ الصُّمَّ الدُّعاءَ إِذا وَلَّوا مُدبِرينَ

You can’t make the dead hear, nor can you make the deaf hear the call when they’ve turned their backs and retreated.