Yahya related to me from Malik from Ibn Shihab from Abu Salamaibn Abd ar-Rahman ibn Awf that Abd ar-Rahman ibn Awf bought a slave-girl and found that she had a husband, so he returned her. (DE)
USC-MSA web (English) reference: Book 31, Hadith 8 (DE)
Arabic reference (DE): Book 31, Hadith 1300 (DE)