The Book of Zakat
12/14. Chapter:
The virtue of spending and giving charity to relatives, spuses, children and parents, even if they are idolaters
Sahih Muslim
حَدَّثَنِي هَارُونُ بْنُ سَعِيدٍ الأَيْلِيُّ، حَدَّثَنَا ابْنُ وَهْبٍ، أَخْبَرَنِي عَمْرٌو، عَنْ بُكَيْرٍ، عَنْ كُرَيْبٍ، عَنْ مَيْمُونَةَ بِنْتِ الْحَارِثِ، أَنَّهَا أَعْتَقَتْ وَلِيدَةً فِي زَمَانِ رَسُولِ اللَّهِ صلى الله عليه وسلم فَذَكَرَتْ ذَلِكَ لِرَسُولِ اللَّهِ صلى الله عليه وسلم فَقَالَ " لَوْ أَعْطَيْتِهَا أَخْوَالَكِ كَانَ أَعْظَمَ لأَجْرِكِ " .
Maimuna bint Harith reported that she set free a slave-girl during the lifetime of the Messenger of Allah (ﷺ) and she made a mention of that to the Messenger of Allah (ﷺ) and he said: Had you gives her to your maternal uncles, you would have a greater reward.
Reference : Sahih Muslim 999In-book reference : Book 12, Hadith 54USC-MSA web (English) reference : Book 5, Hadith 2187