Ali 'Imran 3:154

Then He sent down upon you, after grief, security — a slumber (nu‘āsan, ‘slumber’ substitutes for amanatan, ‘security’) overcoming (yaghshā or taghshā) a party of you, namely, the believers. They would become dizzy under their shields and their swords would fall from their hands; and a party whose own souls distressed them, that is, they caused them grief, so that their only wish was their deliverance, regardless of the Prophet and his Companions, and they were unable to fall asleep: these were the hypocrites; thinking wrongly of God, thoughts of, those thoughts during the, age of ignorance, the moment they thought that the Prophet had been killed or that he would not be given victory, saying, ‘Have we any part whatever in the affair?’ (read [interrogative] hal as [negative] mā) that is, [we have no part in] the assistance which we were promised. Say, to them: ‘The affair belongs entirely (read accusative kullahu to denote an emphasis, or nominative kulluhu as a subject [of a new sentence], the predicate of which is [what follows]) to God’, that is to say, the decree is His, He does what He wills. They conceal within their hearts what they do not disclose, what they [do not] manifest, to you, saying, (yaqūlūna, ‘saying’, is an explication of the preceding [statement]) ‘Had we had any part in the affair, we would not have been slain here’, that is to say, ‘Had the choice been ours, we would not have set out and thus been slain; but we were forced to set out’. Say, to them: ‘Even if you had been in your houses, with some among you whom God had appointed that they be slain, those, of you, for whom it had been appointed, decreed, that they be slain would have sallied forth, would have gone forth, to the places where they were to lie’, the battleground where they were to fall, and they would have been slain; and their staying put [at home] would not have saved them, for God’s decree will be, inevitably. And, He did what He did at Uhud, that God might try, [that He might] test, what was in your breasts, your hearts, of sincerity or hypocrisy, and that He might prove, [that He might] distinguish, what was in your hearts; and God knows what is in the breasts, what is in the hearts. Nothing can be hidden from Him, and He tries people only to make [matters] manifest for them.