al-Aḥzāb

يَوْمَ تُقَلَّبُ وُجُوهُهُمْ فِي النَّارِ يَقُولُونَ يَالَيْتَنَآ أَطَعْنَا اللَّهَ وَأَطَعْنَا الرَّسُولاَ

66. “On the Day when their faces are turned over in the Fire, they say: ‘Oh! Would that we had obeyed Allah and had obeyed the Messenger!’”

In Hereafter, regret will never be useful. So, the only way of being saved is to obey Allah and His Messenger. The above noble verse explains another part of the painful (punishment) of the unbelievers in Hereafter. It says:

This change in their faces is either from the point of the colour of the faces: that sometimes they become red and grey, and sometimes they become yellow and pail. Or it is from the point that their faces will be put over the flames of Fire that sometimes this side of their faces will be put over the fire, and sometimes another side. It is here that they shout of regret and say that if they had obeyed Allah and the Prophet, they would not have encountered such a painful fate.

The verse continues saying: