Quran 23:110 from Surah Al-Muminoon on Divine Marvels.
فَٱتَّخَذۡتُمُوهُمۡ سِخۡرِيًّا حَتَّىٰٓ أَنسَوۡكُمۡ ذِكۡرِي وَكُنتُم مِّنۡهُمۡ تَضۡحَكُونَ
English translation: But you took them (in) mockery until they made you forget My remembrance and you used (to) at them laugh
Transliteration: fa-ittakhadhtumuhum sikh'riyyan hatta ansawkum dhik'ri wakuntum min'hum tadhakuna