It is narrated from Muhammad (bin Sirin) that a slave was jointly owned by two persons, and one of them freed his half share. His partner went to Sayyiduna Umar (may Allah be pleased with him) (to refer the matter to him), whereupon he (may Allah be pleased with him) issued a written order: "The value of this slave should be assessed according to the highest price he could fetch."
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب العتق / 1514
Hadith Gradingمحدثین:إسناده ضعيف
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :إسناده ضعيف. » «أخرجه السنن الكبرى للبيهقي برقم: 21393، وأخرجه مصنف ابن أبي شيبة برقم: 22154»