Isma'il bin Raja' narrates from Abu Mijlaz (may Allah have mercy on him) that two young men of the Juhaynah tribe jointly owned a slave. One of them freed his share, so the Messenger of Allah (peace and blessings be upon him) detained him until he sold his goats for it. This is mursal.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب التفليس / 11263