(23) باب مَا يَرِثُ النِّسَاءُ مِنَ الْوَلاَءِ
Narrated Aisha:
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).
Reference: Sahih al-Bukhari 6760
In-book reference: Book 85, Hadith 37
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 8, Book 80, Hadith 752