Umm Abdullah (may Allah be pleased with her) narrates from her father, and he from his father (may Allah be pleased with him), that the Prophet (peace and blessings be upon him) said: "Whoever obtains a slave, his belongings also belong to him (the master)."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 12858