﴿ وَلَئِنْ أَصَٰبَكُمْ فَضْلٌۭ مِّنَ ٱللَّهِ لَيَقُولَنَّ كَأَن لَّمْ تَكُنۢ بَيْنَكُمْ وَبَيْنَهُۥ مَوَدَّةٌۭ يَٰلَيْتَنِى كُنتُ مَعَهُمْ فَأَفُوزَ فَوْزًا عَظِيمًۭا ﴾

“But if good fortune comes to you from God, such a person is sure to say - just as if there had never been any question of love between you and him -: "Oh, would that I had been with them, and thus had a [share in their] mighty triumph!"”

2. Seen outwardly, the words of the verse 72 (... وَإِنَّ مِنكُمْ ) seem to suggest that this too is addressed to the believers, although the characteristics described later on cannot be taken to be those of the believers. Therefore, al-Qurtubi says that they signify hypocrites. Since, they were the ones who used to claim being Muslims, at least outwardly. This is why they have been identified as a group from among the believers.