Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
quran:26:201

They will not believe in it until they see the painful punishment.  

They will not believe in it until they behold the painful chastisement,
القرآن:٢٦:٢٠١

لَا يُؤْمِنُونَ بِهِ حَتَّىٰ يَرَوُا الْعَذَابَ الْأَلِيمَ  

{لا يؤمنون به حتى يروا العذاب الأليم}.