Sayyiduna Abu Huraira (may Allah be pleased with him) narrated from the Messenger of Allah (peace and blessings be upon him), he (peace be upon him) said: "Whoever frees his share in a jointly owned slave, and if he has wealth and there is no partner with him, then freeing him from his wealth becomes obligatory upon him."
Hadith Referenceمسند اسحاق بن راهويه / كتاب العتق و المكاتب / 479
Hadith Takhrij«سنن كبري بيهقي : 276/10 . اسناده صحيح .»