The Messenger of Allah ﷺ as saying: The right of inheritance belongs to only to the one who paid the price (of the slave) and patronised him by doing an act of gratitude.
قَالَ رَسُولُ اللَّهِ ﷺ الْوَلاَءُ لِمَنْ أَعْطَى الثَّمَنَ وَوَلِيَ النِّعْمَةَ
Messenger of Allah 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).
قَالَ رَسُولُ اللَّهِ ﷺ الْوَلاَءُ لِمَنْ أَعْطَى الْوَرِقَ وَوَلِيَ النِّعْمَةَ
"The Wala' is for the one who gives the price, or for the one who grants the favor."
النَّبِيُّ ﷺ الْوَلاَءُ لِمَنْ أَعْطَى الثَّمَنَ أَوْ لِمَنْ وَلِيَ النِّعْمَةَ
Messenger of Allah 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). (Using translation from Bukhārī 6760)
قَالَ رَسُولُ اللهِ ﷺ «الْوَلَاءُ لِمَنْ أَعْطَى الْوَرِقَ وَوَلِيَ النِّعْمَةَ»
[Machine] "The Messenger of Allah ﷺ said: 'Loyalty belongs to those who show gratitude.'"
رَسُولُ اللهِ ﷺ «الْوَلَاءُ لِمَنْ وَلِيَ النِّعْمَةَ»
From 'Aishah that she wanted to purchase Barirah, but they (he owners) made the condition that they would retain the Wala'. So the Prophet ﷺ said: "Buy her, the Wala' is only for the one who gives the price, or for the one who grants the favor." [He said:] There is something on this topic from Ibn 'Umar. (Using translation from Tirmidhī 1256)
"اشْتَرِيها؛ فإِنَّما الولاءُ لِمَنْ أعْطى الثمَنَ، أو لمنْ وَلِيَ النَّعْمةَ" .
"الوَلاءُ لمن أعْطَى الوَرِق وَوَلِيُّ النَّعْمةِ".