And He has united their (i.e. believers') hearts. If you had spent all that is in the earth, you could not have united their hearts, but Allah has united them. Certainly He is All-Mighty, All-Wise.
و ميان دلهايشان اُلفت انداخت، كه اگر آنچه در روى زمين است همه را خرج مى‌كردى نمى‌توانستى ميان دلهايشان اُلفت برقرار كنى، ولى خدا بود كه ميان آنان اُلفت انداخت، چرا كه او تواناى حكيم است.