The Prophet ﷺ said, "I give to Quraish people in order to let them adhere to Islam, for they are near to their life of Ignorance (i.e. they have newly embraced Islam and it is still not strong in their hearts."
قَالَ النَّبِيُّ ﷺ إِنِّي أُعْطِي قُرَيْشًا أَتَأَلَّفُهُمْ لأَنَّهُمْ حَدِيثُ عَهْدٍ بِجَاهِلِيَّةٍ