Quran 74:43 from Surah Al-Muddaththir on Divine Marvels.
قَالُواْ لَمۡ نَكُ مِنَ ٱلۡمُصَلِّينَ
English translation: They will say Not we were of those who prayed
Transliteration: qalu lam naku mina al-musalina