Al-Fath 48:26

إِذۡ جَعَلَ ٱلَّذِينَ كَفَرُواْ فِي قُلُوبِهِمُ ٱلۡحَمِيَّةَ حَمِيَّةَ ٱلۡجَٰهِلِيَّةِ فَأَنزَلَ ٱللَّهُ سَكِينَتَهُۥ عَلَىٰ رَسُولِهِۦ وَعَلَى ٱلۡمُؤۡمِنِينَ وَأَلۡزَمَهُمۡ كَلِمَةَ ٱلتَّقۡوَىٰ وَكَانُوٓاْ أَحَقَّ بِهَا وَأَهۡلَهَاۚ وَكَانَ ٱللَّهُ بِكُلِّ شَيۡءٍ عَلِيمٗا 26

When those who disbelieved had put into their hearts chauvinism - the chauvinism of the time of ignorance. But Allah sent down His tranquillity upon His Messenger and upon the believers and imposed upon them the word of righteousness, and they were more deserving of it and worthy of it. And ever is Allah, of all things, Knowing