Sahih al-Bukhari 6760
Sahih al-Bukhari · Book 85: Laws of Inheritance (Al-Faraa'id) · What a woman can inherit of the Wala’ (in the book it is given women)
Narrated Aisha:
حَدَّثَنَا ابْنُ سَلاَمٍ ، أَخْبَرَنَا وَكِيعٌ ، عَنْ سُفْيَانَ ، عَنْ مَنْصُورٍ ، عَنْ إِبْرَاهِيمَ ، عَنِ الأَسْوَدِ ، عَنْ عَائِشَةَ ، قَالَتْ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " الْوَلاَءُ لِمَنْ أَعْطَى الْوَرِقَ، وَوَلِيَ النِّعْمَةَ " .
Allah's Messenger (ﷺ) said, "The wala is for the one who gives the silver (pays the price) and does the favor (of manumission after paying the price).