﴿ بَلْ ظَنَنتُمْ أَن لَّن يَنقَلِبَ ٱلرَّسُولُ وَٱلْمُؤْمِنُونَ إِلَىٰٓ أَهْلِيهِمْ أَبَدًۭا وَزُيِّنَ ذَٰلِكَ فِى قُلُوبِكُمْ وَظَنَنتُمْ ظَنَّ ٱلسَّوْءِ وَكُنتُمْ قَوْمًۢا بُورًۭا ﴾

“Nay, you thought that the Apostle and the believers would never return to their kith and kin: and this seemed goodly to your hearts. And you entertained [such] evil thoughts because you have always been people devoid of all good!””

Related Considerations Reference in this passage is to those Bedouin tribes who were invited by Allah's Messenger ﷺ to join the party of 1400 Muslims who were marching to Hudaibiyah but on one pretext or another, they requested to be excused. This was narrated in part [ 1] of the story of Hudaibiyah. According to some versions, some of those people later repented and became sincere Muslims.