فَلَمَّا آتَاهُم مِّن فَضْلِهِ بَخِلُوا بِهِ وَتَوَلَّوا وَّهُم مُّعْرِضُونَ (76)
(9:76) But when Allah enriched them by His bounty, they grew niggardly and went back on their covenant, and paid no heed to it. *86
*86) This is an instance of their ingratitude for which the hypocrites were rebuked in v. 74.
They broke their covenant with Allah which enjoined them to spend money in charity, if Allah enriched Them by His bounty. This shows that they were confirmed criminals and they did not care in the least for the agreements they made, and were niggardly and had no moral code to observe.