4:18
وَلَيۡسَتِ التَّوۡبَةُ لِلَّذِيۡنَ يَعۡمَلُوۡنَ السَّيِّاٰتِۚ حَتّٰ٘ي اِذَا حَضَرَ اَحَدَهُمُ الۡمَوۡتُ قَالَ اِنِّيۡ تُبۡتُ الۡـٰٔنَ وَلَا الَّذِيۡنَ يَمُوۡتُوۡنَ وَهُمۡ كُفَّارٌؕ اُولٰٓئِكَ اَعۡتَدۡنَا لَهُمۡ عَذَابًا اَلِيۡمًا
But repentance is not [accepted] of those who [continue to] do evil deeds up until, when death comes to one of them, he says, "Indeed, I have repented now," or of those who die while they are disbelievers. For them We have prepared a painful punishment