فَاِنَّكَ

لَا

تُسْمِعُ

الْمَوْتٰى

وَلَا

تُسْمِعُ

الصُّمَّ

الدُّعَآءَ

اِذَا

وَلَّوْا

مُدْبِرِیْنَ

۟

So, you cannot make the dead to hear, nor can you make the deaf to hear the call when they turn their backs in retreat.