وَما يَستَوِي الأَحياءُ وَلَا الأَمواتُ ۚ إِنَّ اللَّهَ يُسمِعُ مَن يَشاءُ ۖ وَما أَنتَ بِمُسمِعٍ مَن فِي القُبورِ

And not equal are the living and the dead. Indeed, Allah causes to hear whom He wills, but you cannot make hear those in the graves.