Ali 'Imran 3:156

إِذْ تُصْعِدُونَ وَلَا تَلْوُونَ عَلَىٰ أَحَدٍ وَالرَّسُولُ يَدْعُوكُمْ فِي أُخْرَاكُمْ فَأَثَابَكُمْ غَمًّا بِغَمٍّ لِّكَيْلَا تَحْزَنُوا عَلَىٰ مَا فَاتَكُمْ وَلَا مَا أَصَابَكُمْ ۗ وَاللَّهُ خَبِيرٌ بِمَا تَعْمَلُونَ

[Remember] when you [fled and] climbed [the mountain] without looking aside at anyone while the Messenger was calling you from behind. So Allah repaid you with distress upon distress so you would not grieve for that which had escaped you [of victory and spoils of war] or [for] that which had befallen you [of injury and death]. And Allah is [fully] Acquainted with what you do.

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

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.

إِنَّ الَّذِينَ تَوَلَّوْا مِنكُمْ يَوْمَ الْتَقَى الْجَمْعَانِ إِنَّمَا اسْتَزَلَّهُمُ الشَّيْطَانُ بِبَعْضِ مَا كَسَبُوا ۖ وَلَقَدْ عَفَا اللَّهُ عَنْهُمْ ۗ إِنَّ اللَّهَ غَفُورٌ حَلِيمٌ

Indeed, those of you who turned back on the day the two armies met, it was Satan who caused them to slip because of some [blame] they had earned. But Allah has already forgiven them. Indeed, Allah is Forgiving and Forbearing.

وَلَئِن قُتِلْتُمْ فِي سَبِيلِ اللَّهِ أَوْ مُتُّمْ لَمَغْفِرَةٌ مِّنَ اللَّهِ وَرَحْمَةٌ خَيْرٌ مِّمَّا يَجْمَعُونَ

And if you are killed in the cause of Allah or die - then forgiveness from Allah and mercy are better than whatever they accumulate [in this world].

وَلَئِن مُّتُّمْ أَوْ قُتِلْتُمْ لَإِلَى اللَّهِ تُحْشَرُونَ

And whether you die or are killed, unto Allah you will be gathered.

فَبِمَا رَحْمَةٍ مِّنَ اللَّهِ لِنتَ لَهُمْ ۖ وَلَوْ كُنتَ فَظًّا غَلِيظَ الْقَلْبِ لَانفَضُّوا مِنْ حَوْلِكَ ۖ فَاعْفُ عَنْهُمْ وَاسْتَغْفِرْ لَهُمْ وَشَاوِرْهُمْ فِي الْأَمْرِ ۖ فَإِذَا عَزَمْتَ فَتَوَكَّلْ عَلَى اللَّهِ ۚ إِنَّ اللَّهَ يُحِبُّ الْمُتَوَكِّلِينَ

So by mercy from Allah, [O Muhammad], you were lenient with them. And if you had been rude [in speech] and harsh in heart, they would have disbanded from about you. So pardon them and ask forgiveness for them and consult them in the matter. And when you have decided, then rely upon Allah. Indeed, Allah loves those who rely [upon Him].