Surah Al-Mai'dah (The Spread Table), Verse 115

قَالَ اللّٰهُ اِنِّیْ مُنَزِّلُهَا عَلَیْكُمْ فَمَنْ یَّكْفُرْ بَعْدُ مِنْكُمْ فَاِنِّیْۤ اُعَذِّبُهٗ عَذَابًا لَّاۤ اُعَذِّبُهٗۤ اَحَدًا مِّنَ الْعٰلَمِیْنَ 

Qaalal laahu innee munaz ziluhaa 'alaikum famai yakfur ba'du minkum fa inneee u'azzibuhoo 'azaabal laaa u'azzibuhooo ahadam minal 'aalameen

“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."”

Quran 5:115 (Yusuf Ali Translation)