Surat Al-'Aĥzāb - سورة الأحزاب

وَلَوْ دُخِلَتْ عَلَيْهِم مِّنْ أَقْطَارِهَا ثُمَّ سُئِلُوا الْفِتْنَةَ لَآتَوْهَا وَمَا تَلَبَّثُوا بِهَا إِلَّا يَسِيرًا

Muhsin Khan: And if the enemy had entered from all sides (of the city), and they had been exhorted to AlFitnah (i.e. to renegade from Islam to polytheism) they would surely have committed it and would have hesitated thereupon but little.