﴿ وَلَوْ أَنَّهُمْ رَضُوا۟ مَآ ءَاتَىٰهُمُ ٱللَّهُ وَرَسُولُهُۥ وَقَالُوا۟ حَسْبُنَا ٱللَّهُ سَيُؤْتِينَا ٱللَّهُ مِن فَضْلِهِۦ وَرَسُولُهُۥٓ إِنَّآ إِلَى ٱللَّهِ رَٰغِبُونَ ﴾

“And yet, [it would be but for their own good] if they were to content themselves with what God has given them and [caused] His Apostle [to give them], and would say, "God is enough for us! God will give us [whatever He wills] out of His bounty, and [will cause] His Apostle [to give us, too]: verily, unto God alone do we turn with hope!"”

If only they had been content with what God and His Messenger have given them in the way of spoils and the like and had said ‘Sufficient for us is God; God will give us from His bounty and His Messenger will also give us from other spoils what will suffice us; to God we are suppliants’ that He enrich us the response of the conditional law ‘if only’ is la-kāna khayran lahum ‘it would have been better for them’.