Al-Mukhtasar
وَلَوْ جَآءَتْهُمْ كُلُّ ءَايَةٍ حَتَّىٰ يَرَوُا۟ ٱلْعَذَابَ ٱلْأَلِيمَ ﴿٩٧﴾
Even if every explanatory or universal sign comes to them, until they witness the painful punishment and believe at a time when their belief will not benefit them.