وَلَوْ أَنَّهُمْ رَضُوا مَا آتَاهُمُ اللَّهُ وَرَسُولُهُ وَقَالُوا حَسْبُنَا اللَّهُ سَيُؤْتِينَا اللَّهُ مِنْ فَضْلِهِ وَرَسُولُهُ إِنَّا إِلَى اللَّهِ رَاغِبُونَ 59
If only they had been content with what Allah and His Messenger gave them, and had said, "Sufficient unto us is Allah! Allah and His Messenger will soon give us of His bounty: to Allah do we turn our hopes!" (that would have been the right course).