(19) بَابُ مَا كَانَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يُعْطِي الْمُؤَلَّفَةَ قُلُوبُهُمْ وَغَيْرَهُمْ مِنَ الْخُمُسِ وَنَحْوِهِ
Narrated Anas:
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."
Reference: Sahih al-Bukhari 3146
In-book reference: Book 57, Hadith 54
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 4, Book 53, Hadith 374