Quran 33:12 from Surah Al-Ahzaab on Divine Marvels.
وَإِذۡ يَقُولُ ٱلۡمُنَٰفِقُونَ وَٱلَّذِينَ فِي قُلُوبِهِم مَّرَضٞ مَّا وَعَدَنَا ٱللَّهُ وَرَسُولُهُۥٓ إِلَّا غُرُورٗا
English translation: And when said the hypocrites and those in their hearts (was) a disease Not Allah promised us Allah promised us and His messenger except delusion
Transliteration: wa-idh yaqulu al-munafiquna wa-alladhina fi qulubihim maradun ma wa'adana al-lahu warasuluhu illa ghururan