Surah Assaaffat ayat 21 Tafsir Quran 37:21

﴿هَٰذَا يَوْمُ الْفَصْلِ الَّذِي كُنتُم بِهِ تُكَذِّبُونَ﴾
[ الصافات: 21]

37:21 [They will be told], "This is the Day of Judgement which you used to deny."

‘This is the Day of Judgement between all creatures that you used to deny!’

There and then they will be told: This is the Day of Judgement and final decision, the Day on which the faithful are segregated from the infidels, this is the Day you have always denied

The Day of Recompense Allah tells us what the disbeliever will say on the Day of Resurrection, how they will blame themselves and admit that they wronged themselves in this world.
When they see the horrors of the Day of Resurrection with their own eyes, they will be filled with regret at the time when regret will not avail them anything. وَقَالُواْ يوَيْلَنَا هَـذَا يَوْمُ الدِّينِ ( They will say: "Woe to us! This is the Day of Recompense!" ) And the angels and the believers will say: هَـذَا يَوْمُ الْفَصْلِ الَّذِى كُنتُمْ بِهِ تُكَذِّبُونَ ( This is the Day of Judgement which you used to deny. ) This will be said to them as a rebuke and reproof.
Allah will command the angels to separate the disbeliever from the believers in the place where they are standing.
Allah says: احْشُرُواْ الَّذِينَ ظَلَمُواْ وَأَزْوَجَهُمْ ( (It will be said to the angels: ) Assemble those who did wrong, together with their companions) An-Nu`man bin Bashir, may Allah be pleased with him, said, "Their companions means their counterparts, those who are like them." This was also the view of Ibn `Abbas, Sa`id bin Jubayr, `Ikrimah, Mujahid, As-Suddi, Abu Salih, Abu Al-`Aliyah and Zayd bin Aslam." Sharik said, narrating from Simak, from An-Nu`man: "I heard `Umar say: احْشُرُواْ الَّذِينَ ظَلَمُواْ وَأَزْوَجَهُمْ ( Assemble those who did wrong, together with their companions ) means, `Those who are like them.
So those who committed Zina will be gathered with others who committed Zina, those who dealt in Riba will be gathered with others who dealt in Riba, those who drank wine will be gathered with others who drank wine.' Mujahid and Sa`id bin Jubayr narrated from Ibn `Abbas: وَأَزْوَجُهُمْ ( their companions ) means "Their friends." وَمَا كَانُواْ يَعْبُدُونَمِن دُونِ اللَّهِ ( and what they used to worship.
Instead of Allah, ) means, instead of Allah, i.e., their idols and false gods will be gathered together with them in the same place. فَاهْدُوهُمْ إِلَى صِرَطِ الْجَحِيمِ ( and lead them on to the way of flaming Fire. ) means, take them to the way to Hell.
This is like the Ayah: وَنَحْشُرُهُمْ يَوْمَ الْقِيَـمَةِ عَلَى وُجُوهِهِمْ عُمْيًا وَبُكْمًا وَصُمًّا مَّأْوَاهُمْ جَهَنَّمُ كُلَّمَا خَبَتْ زِدْنَاهُمْ سَعِيرًا ( and We shall gather them together on the Day of Resurrection on their faces, blind, dumb and deaf; their abode will be Hell; whenever it abates, We shall increase for them the fierceness of the Fire ) ( 17:97 ). وَقِفُوهُمْ إِنَّهُمْ مَّسْئُولُونَ ( But stop them, verily, they are to be questioned. ) means, stop them so that they may be questioned about the things they did and said in this world.
As Ad-Dahhak said, narrating from Ibn `Abbas, this means, `detain them, for they are to be brought to account.' `Abdullah bin Al-Mubarak said, "I heard `Uthman bin Za'idah say, `The first thing about which a man will be asked is the company that he kept.
Then by way of rebuke, it will be said to them: مَا لَكُمْ لاَ تَنَـصَرُونَ ( What is the matter with you Why do you not help one another )."' meaning, `as you claimed that you would all help one another.' بَلْ هُمُ الْيَوْمَ مُسْتَسْلِمُونَ ( Nay, but that Day they shall surrender. ) means, they will be subjected to the command of Allah, and they will not be able to resist it or avoid it.
And Allah knows best.

(37:21) 'Yes, this is the Day of Final Decision that you used to deny as a lie.' *13

[They will be told], "This is the meaning

*13) It may be that this is said by the believers, or by the angels; or it may be, as it were, the common expression of the conditions prevailing in the plain of Resurrection or it may as well be another reaction of the people themselves.
That is, they may be saying in their hearts.
" In the world, you lived in a way as if no Day of Judgement would ever come.
Now you have come to your doom! This is the same Day that you used to deny ! "
 

The Day of Recompense Allah tells us what the disbeliever will say on the Day of Resurrection, how they will blame themselves and admit that they wronged themselves in this world.
When they see the horrors of the Day of Resurrection with their own eyes, they will be filled with regret at the time when regret will not avail them anything. وَقَالُواْ يوَيْلَنَا هَـذَا يَوْمُ الدِّينِ ( They will say: "Woe to us! This is the Day of Recompense!" ) And the angels and the believers will say: هَـذَا يَوْمُ الْفَصْلِ الَّذِى كُنتُمْ بِهِ تُكَذِّبُونَ ( This is the Day of Judgement which you used to deny. ) This will be said to them as a rebuke and reproof.
Allah will command the angels to separate the disbeliever from the believers in the place where they are standing.
Allah says: احْشُرُواْ الَّذِينَ ظَلَمُواْ وَأَزْوَجَهُمْ ( (It will be said to the angels: ) Assemble those who did wrong, together with their companions) An-Nu`man bin Bashir, may Allah be pleased with him, said, "Their companions means their counterparts, those who are like them." This was also the view of Ibn `Abbas, Sa`id bin Jubayr, `Ikrimah, Mujahid, As-Suddi, Abu Salih, Abu Al-`Aliyah and Zayd bin Aslam." Sharik said, narrating from Simak, from An-Nu`man: "I heard `Umar say: احْشُرُواْ الَّذِينَ ظَلَمُواْ وَأَزْوَجَهُمْ ( Assemble those who did wrong, together with their companions ) means, `Those who are like them.
So those who committed Zina will be gathered with others who committed Zina, those who dealt in Riba will be gathered with others who dealt in Riba, those who drank wine will be gathered with others who drank wine.' Mujahid and Sa`id bin Jubayr narrated from Ibn `Abbas: وَأَزْوَجُهُمْ ( their companions ) means "Their friends." وَمَا كَانُواْ يَعْبُدُونَمِن دُونِ اللَّهِ ( and what they used to worship.
Instead of Allah, ) means, instead of Allah, i.e., their idols and false gods will be gathered together with them in the same place. فَاهْدُوهُمْ إِلَى صِرَطِ الْجَحِيمِ ( and lead them on to the way of flaming Fire. ) means, take them to the way to Hell.
This is like the Ayah: وَنَحْشُرُهُمْ يَوْمَ الْقِيَـمَةِ عَلَى وُجُوهِهِمْ عُمْيًا وَبُكْمًا وَصُمًّا مَّأْوَاهُمْ جَهَنَّمُ كُلَّمَا خَبَتْ زِدْنَاهُمْ سَعِيرًا ( and We shall gather them together on the Day of Resurrection on their faces, blind, dumb and deaf; their abode will be Hell; whenever it abates, We shall increase for them the fierceness of the Fire ) ( 17:97 ). وَقِفُوهُمْ إِنَّهُمْ مَّسْئُولُونَ ( But stop them, verily, they are to be questioned. ) means, stop them so that they may be questioned about the things they did and said in this world.
As Ad-Dahhak said, narrating from Ibn `Abbas, this means, `detain them, for they are to be brought to account.' `Abdullah bin Al-Mubarak said, "I heard `Uthman bin Za'idah say, `The first thing about which a man will be asked is the company that he kept.
Then by way of rebuke, it will be said to them: مَا لَكُمْ لاَ تَنَـصَرُونَ ( What is the matter with you Why do you not help one another )."' meaning, `as you claimed that you would all help one another.' بَلْ هُمُ الْيَوْمَ مُسْتَسْلِمُونَ ( Nay, but that Day they shall surrender. ) means, they will be subjected to the command of Allah, and they will not be able to resist it or avoid it.
And Allah knows best.

And the angels will say to them: ( This is the Day of Separation ) the Day of Judgement between you and the believers, ( which ye used to deny ) in the life of this world.

(It will be said): "This is the Day of Judgement which you used to deny."

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