وَأَنَّهُ كانَ رِجالٌ مِنَ الإِنسِ يَعوذونَ بِرِجالٍ مِنَ الجِنِّ فَزادوهُم رَهَقًا

Certain humans used to seek help from the men of the jinn, which only exacerbated their fear and fatigue.