Quran 5:115 from Surah Al-Maaida on Divine Marvels.
قَالَ ٱللَّهُ إِنِّي مُنَزِّلُهَا عَلَيۡكُمۡۖ فَمَن يَكۡفُرۡ بَعۡدُ مِنكُمۡ فَإِنِّيٓ أُعَذِّبُهُۥ عَذَابٗا لَّآ أُعَذِّبُهُۥٓ أَحَدٗا مِّنَ ٱلۡعَٰلَمِينَ
English translation: Said Allah Indeed I (will) send it down to you then whoever disbelieves after (that) among you then indeed I [I] will punish him (with) a punishment not I have punished anyone among the worlds
Transliteration: qala al-lahu inni munazziluha alaykum faman yakfur ba'du minkum fa-inni u'adhibuhu adhaban la u'adhibuhu ahadan mina al-'alamina