Quran 8:63 from Surah Al-Anfaal on Divine Marvels.
وَأَلَّفَ بَيۡنَ قُلُوبِهِمۡۚ لَوۡ أَنفَقۡتَ مَا فِي ٱلۡأَرۡضِ جَمِيعٗا مَّآ أَلَّفۡتَ بَيۡنَ قُلُوبِهِمۡ وَلَٰكِنَّ ٱللَّهَ أَلَّفَ بَيۡنَهُمۡۚ إِنَّهُۥ عَزِيزٌ حَكِيمٞ
English translation: And He (has) put affection between their hearts If you (had) spent whatever (is) in the earth all not (could) you (have) put affection between their hearts but Allah (has) put affection between them Indeed, He (is) All-Mighty All-Wise
Transliteration: wa-allafa bayna qulubihim law anfaqta ma fi al-ardi jami'an ma allafta bayna qulubihim walakinna al-laha allafa baynahum innahu azizun hakimun