A man freed six of his slaves at the time of his death, and he had no other property besides them. The Messenger of Allah ﷺ called for them, divided them into three groups, then drew lots between them. He freed two and kept four in slavery, and he spoke harshly about what the man had done.
حدثنا إسماعيل حدثنا أيوب عن أبي قلابة عن أبي المهلب
أن رجلا أعتق ستة مملوكين له عند موته لم يكن له مال غيرهم فدعا بهم رسول الله ﷺ فجزأهم أثلاثا ثم أقرع بينهم فأعتق اثنين وأرق أربعة وقال له قولا شديدا
Its isnad is sahih. Abu Muhallab, whose name is disputed, is trustworthy, and his hadith appears in Muslim.The hadith was narrated by Muslim in 3/1288, no. 1668, in the chapter on oaths, on one who frees his share in a slave. Also by Abu Dawud, 4/28, no. 3958, in the chapter on manumission, and by Tirmidhi, 3/636, no. 1364, who said, hasan sahih. And by Bayhaqi, 10/285.