Then after distress, He sent down upon you security [in the form (3:154)

﴿ثُمَّ أَنزَلَ عَلَيْكُم مِّن بَعْدِ الْغَمِّ أَمَنَةً نُّعَاسًا يَغْشَىٰ طَائِفَةً مِّنكُمْ ۖ وَطَائِفَةٌ قَدْ أَهَمَّتْهُمْ أَنفُسُهُمْ يَظُنُّونَ بِاللَّهِ غَيْرَ الْحَقِّ ظَنَّ الْجَاهِلِيَّةِ ۖ يَقُولُونَ هَل لَّنَا مِنَ الْأَمْرِ مِن شَيْءٍ ۗ قُلْ إِنَّ الْأَمْرَ كُلَّهُ لِلَّهِ ۗ يُخْفُونَ فِي أَنفُسِهِم مَّا لَا يُبْدُونَ لَكَ ۖ يَقُولُونَ لَوْ كَانَ لَنَا مِنَ الْأَمْرِ شَيْءٌ مَّا قُتِلْنَا هَاهُنَا ۗ قُل لَّوْ كُنتُمْ فِي بُيُوتِكُمْ لَبَرَزَ الَّذِينَ كُتِبَ عَلَيْهِمُ الْقَتْلُ إِلَىٰ مَضَاجِعِهِمْ ۖ وَلِيَبْتَلِيَ اللَّهُ مَا فِي صُدُورِكُمْ وَلِيُمَحِّصَ مَا فِي قُلُوبِكُمْ ۗ وَاللَّهُ عَلِيمٌ بِذَاتِ الصُّدُورِ﴾
[ آل عمران: 154]

3:154 Then after distress, He sent down upon you security [in the form of] drowsiness, overcoming a faction of you, while another faction worried about themselves, thinking of Allah other than the truth - the thought of ignorance, saying, "Is there anything for us [to have done] in this matter?" Say, "Indeed, the matter belongs completely to Allah." They conceal within themselves what they will not reveal to you. They say, "If there was anything we could have done in the matter, some of us would not have been killed right here." Say, "Even if you had been inside your houses, those decreed to be killed would have come out to their death beds." [It was] so that Allah might test what is in your breasts and purify what is in your hearts. And Allah is Knowing of that within the breasts.

Then He sent down on you, after the pain and distress, peace and security.
A group among you, who trusted in the promise of Allah, became overcome by sleep because of the peace and serenity in their hearts.
Another group were not blessed with security or sleep, and they were the hypocrites, who only worried about their own safety, and felt upset and scared.
They thought badly of Allah, thinking that He would not help His Prophet or support His servants, like those of the time of ignorance before Islam did, who did not understand Allah’s reality.
These hypocrites said, due to their ignorance of Allah, that they did not have a say in whether they went out to fight; and if they had, they would not have done so.
Tell them, O Prophet, in reply, that everything that happens is up to Allah, and that He decreed that they would go out to fight.
These hypocrites hide in themselves doubt and bad opinion which they do not show to you, saying that if they had a say in whether they had gone to fight, then people would not have been killed in this place.
Tell them, O Prophet, in reply, that if they had been in their houses far from the places of battle and death, those whom Allah had destined to be killed would inevitably go out to the places of their death.
Allah only did this to test the intentions and motives in your hearts, and to reveal the faith and hypocrisy in them.
Allah knows what is in the hearts of people, and nothing is hidden from Him.

Then after the distress, He sent down security for you. Slumber overtook a party of you, while another party was thinking about themselves (as how to save their ownselves, ignoring the others and the Prophet SAW) and thought wrongly of Allah - the thought of ignorance. They said, "Have we any part in the affair?" Say you (O Muhammad SAW): "Indeed the affair belongs wholly to Allah." They hide within themselves what they dare not reveal to you, saying: "If we had anything to do with the affair, none of us would have been killed here." Say: "Even if you had remained in your homes, those for whom death was decreed would certainly have gone forth to the place of their death," but that Allah might test what is in your breasts; and to Mahis that which was in your hearts (sins), and Allah is All-Knower of what is in (your) breasts.

phonetic Transliteration

Thumma anzala AAalaykum min baAAdi alghammi amanatan nuAAasan yaghsha taifatan minkum wataifatun qad ahammathum anfusuhum yathunnoona biAllahi ghayra alhaqqi thanna aljahiliyyati yaqooloona hal lana mina alamri min shayin qul inna alamra kullahu lillahi yukhfoona fee anfusihim ma la yubdoona laka yaqooloona law kana lana mina alamri shayon ma qutilna hahuna qul law kuntum fee buyootikum labaraza allatheena kutiba AAalayhimu alqatlu ila madajiAAihim waliyabtaliya Allahu ma fee sudoorikum waliyumahhisa ma fee quloobikum waAllahu AAaleemun bithati alssudoori

Abdullah Yusuf Ali - Translation

After (the excitement) of the distress, He sent down calm on a band of you overcome with slumber, while another band was stirred to anxiety by their own feelings, Moved by wrong suspicions of Allah-suspicions due to ignorance. They said: "What affair is this of ours?" Say thou: "Indeed, this affair is wholly Allah's." They hide in their minds what they dare not reveal to thee. They say (to themselves): "If we had had anything to do with this affair, We should not have been in the slaughter here." Say: "Even if you had remained in your homes, those for whom death was decreed would certainly have gone forth to the place of their death"; but (all this was) that Allah might test what is in your breasts and purge what is in your hearts. For Allah knoweth well the secrets of your hearts.

Safi-ur-Rahman al-Mubarakpuri

Then after the distress, He sent down security for you. Slumber overtook a party of you, while another party was thinking about themselves and thought wrongly of Allah -- the thought of ignorance. They said, "Have we any part in the affair" Say: "Indeed the affair belongs wholly to Allah." They hide within themselves what they dare not reveal to you, saying: "If we had anything to do with the affair, none of us would have been killed here." Say: "Even if you had remained in your homes, those for whom death was decreed would certainly have gone forth to the place of their death," but that Allah might test what is in your breasts; and to purify that which was in your hearts (sins), and Allah is All-Knower of what is in the breasts.

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