With his chain of narration from the Prophet ﷺ, who said, "Whoever frees a slave jointly owned between himself and another is responsible for securing the freedom of the remaining share." This is the wording of Ibn Suwayd.
حدثنا محمد بن المثنى حدثنا محمد بن جعفر ح و حدثنا أحمد بن علي بن سويد حدثنا روح قالا حدثنا شعبة
بإسناده عن النبي ﷺ قال من أعتق مملوكا بينه وبين آخر فعليه خلاصه وهذا لفظ ابن سويد
No references are available.
[Sahih] See the previous hadith. Muslim also narrated it in "the Book of Manumission," chapter on the mention of a slave's earning to buy his freedom, hadith 1502, from Muhammad Ibn Muthanna through the same chain.