It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both): "A mukatab of his (a slave who had made a contract to pay a sum for his freedom) became unable to pay his sum, so he (may Allah be pleased with him) took him back into his slavery and kept with himself the wealth he had received from him until then."
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب العتق / 1523
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: 21789، وأخرجه مصنف ابن أبي شيبة برقم: 21831»