Al-Ma'idah' - 5:115

قَالَ اللّهُ إِنِّي مُنَزِّلُهَا عَلَيْكُمْ فَمَن يَكْفُرْ بَعْدُ مِنكُمْ فَإِنِّي أُعَذِّبُهُ عَذَابًا لاَّ أُعَذِّبُهُ أَحَدًا مِّنَ الْعَالَمِينَ
[5:115]
Allah said: Surely I will send it down to you, but whoever shall disbelieve afterwards from among you, surely I will chastise him with a chastisement with which I will not chastise, anyone among the nations.
Allah said: "I will send it down unto you: But if any of you after that resisteth faith, I will punish him with a penalty such as I have not inflicted on any one among all the peoples."
Allah said: Lo! I send it down for you. And whoso disbelieveth of you afterward, him surely will I punish with a punishment wherewith I have not punished any of (My) creatures.