true faith versus conditional faith

فَلَمَّآ ءَاتَىٰهُم مِّن فَضْلِهِۦ بَخِلُوا۟ بِهِۦ وَتَوَلَّوا۟ وَّهُم مُّعْرِضُونَ

But when He gave them from His bounty, they were stingy with it and turned away while they refused.