(105) باب الشَّرِكَةِ بِغَيْرِ مَالٍ
It was narrated from Salim, from his father, that the Messenger of Allah said:
"Whoever sets free his share of a slave should set him free completely from his own wealth, if he has enough wealth to cover the price of the slave."
Reference: Sunan an-Nasa'i 4698
In-book reference: Book 44, Hadith 250
English translation: Vol. 5, Book 44, Hadith 4702