أُو۟لَـٰٓئِكَ ٱلَّذِينَ خَسِرُوٓا۟ أَنفُسَهُمْ وَضَلَّ عَنْهُم مَّا كَانُوا۟ يَفْتَرُونَ
Those are the ones who will have lost themselves, and lost from them is what they used to invent.
Hud
أُو۟لَـٰٓئِكَ ٱلَّذِينَ خَسِرُوٓا۟ أَنفُسَهُمْ وَضَلَّ عَنْهُم مَّا كَانُوا۟ يَفْتَرُونَ
Those are the ones who will have lost themselves, and lost from them is what they used to invent.
Nearby ayahs help place verse 11:21 in sequence and meaning.
ٱلَّذِينَ يَصُدُّونَ عَن سَبِيلِ ٱللَّهِ وَيَبْغُونَهَا عِوَجًا وَهُم بِٱلْـَٔاخِرَةِ هُمْ كَـٰفِرُونَ
Who averted [people] from the way of Allah and sought to make it [seem] deviant while they, concerning the Hereafter, were disbelievers.
أُو۟لَـٰٓئِكَ لَمْ يَكُونُوا۟ مُعْجِزِينَ فِى ٱلْأَرْضِ وَمَا كَانَ لَهُم مِّن دُونِ ٱللَّهِ مِنْ أَوْلِيَآءَ ۘ يُضَـٰعَفُ لَهُمُ ٱلْعَذَابُ ۚ مَا كَانُوا۟ يَسْتَطِيعُونَ ٱلسَّمْعَ وَمَا كَانُوا۟ يُبْصِرُونَ
Those were not causing failure [to Allah] on earth, nor did they have besides Allah any protectors. For them the punishment will be multiplied. They were not able to hear, nor did they see.
لَا جَرَمَ أَنَّهُمْ فِى ٱلْـَٔاخِرَةِ هُمُ ٱلْأَخْسَرُونَ
Assuredly, it is they in the Hereafter who will be the greatest losers.
إِنَّ ٱلَّذِينَ ءَامَنُوا۟ وَعَمِلُوا۟ ٱلصَّـٰلِحَـٰتِ وَأَخْبَتُوٓا۟ إِلَىٰ رَبِّهِمْ أُو۟لَـٰٓئِكَ أَصْحَـٰبُ ٱلْجَنَّةِ ۖ هُمْ فِيهَا خَـٰلِدُونَ
Indeed, they who have believed and done righteous deeds and humbled themselves to their Lord - those are the companions of Paradise; they will abide eternally therein.