It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that an Ansari man became an apostate and joined the polytheists. Upon this, the following verse was revealed: «﴿كَيْفَ يَهْدِي اللّٰهُ قَوْمًا كَفَرُوا بَعْدَ إِيمَانِهِمْ . . . . .﴾ [آل عمران: 86] » "How shall Allah guide a people who disbelieved after their belief . . . . ." His people conveyed this verse to him, and he repented and returned. The Prophet (peace and blessings of Allah be upon him) accepted his repentance and let him go his way.