Muwatta Malik 1464
موطأ مالك#1464SahihMalik related to me from Nafi from Abdullah ibn Umar that the Messenger of Allah, may Allah bless him and grant him peace,said, "If a man frees his share of a slave and has enough money to cover the full price of the slave justly evaluated for him, he must buy out his partners so that the slave is completely freed. If he doesn't have the money, he partially frees him
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Salim al-HilaliSahih
In-book reference: 38:1