Quran 9:126 — Ultimatum (Bara'ah)

أَوَلا يَرَونَ أَنَّهُم يُفتَنونَ فى كُلِّ عامٍ مَرَّةً أَو مَرَّتَينِ ثُمَّ لا يَتوبونَ وَلا هُم يَذَّكَّرونَ

Do they not see that they suffer from exacting trials every year once or twice? Yet, they consistently fail to repent, and fail to take heed?

[9:125] As for those who harbored doubts in their hearts, it actually added unholiness to their unholiness, and they died as disbelievers.

[9:127] Whenever a sura was revealed, some of them would look at each other as if to say: "Does anyone see you?" Then they left. Thus, GOD has diverted their hearts, for they are people who do not comprehend.