20وَلَقَد صَدَّقَ عَلَيهِم إِبليسُ ظَنَّهُ فَاتَّبَعوهُ إِلّا فَريقًا مِنَ المُؤمِنينَAhmed & SamiraAnd Satan , his assumption/thought had been truthful on them, so they followed him except a group/party from the believers.