بسم الله الرحمن الرحيم

وَمَن يَرۡتَدِدۡ مِنكُمۡ عَن دِينِهِۦ فَيَمُتۡ وَهُوَ ڪَافِرٌ۬ فَأُوْلَـٰٓٮِٕكَ حَبِطَتۡ أَعۡمَـٰلُهُمۡ فِى ٱلدُّنۡيَا وَٱلۡأَخِرَةِ‌ۖ وَأُوْلَـٰٓٮِٕكَ أَصۡحَـٰبُ ٱلنَّارِ‌ۖ هُمۡ فِيهَا خَـٰلِدُونَ

“Whoever of you turns away from his faith and dies an infidel, such people are those whose deeds will go to waste in this world and in the Hereafter, and they are people of the Fire. They shall be there forever.” (217)

Ruling: Some examples of good deeds going to waste in this world, are that the wife of an apostate goes out of the bond of marriage; if a relative of an apostate dies a Muslim, he gets no share in the inheritance; all obligations such as prayers and fasting fulfilled in one’s state of Islam are reduced to nothing; for such a person funeral prayers are not offered and he or she is not buried in the graveyard meant for Muslims.

Deeds going to waste in the hereafter means that one gets no reward for acts of worship and enters hell to stay there for ever. (Maarif Al Quran V1 pg 538)