وَأَلَّفَ بَينَ قُلوبِهِم ۚ لَو أَنفَقتَ ما فِي الأَرضِ جَميعًا ما أَلَّفتَ بَينَ قُلوبِهِم وَلـٰكِنَّ اللَّهَ أَلَّفَ بَينَهُم ۚ إِنَّهُ عَزيزٌ حَكيمٌ

And He united their hearts. Had you spent all that’s on earth, you couldn’t have united their hearts, but God united them. He is Mighty and Wise.