Muwatta Malik, Book 29, Hadith 1203 (In-Book)

Yahya related to me from Malik that he had heard that Abd ar- Rahman ibn Awf divorced his wife, and gave her compensation in the form of a slave-girl.

حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عَبْدَ الرَّحْمَنِ بْنَ عَوْفٍ، طَلَّقَ امْرَأَةً لَهُ فَمَتَّعَ بِوَلِيدَةٍ ‏.‏

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also referenced under: Book 29, Hadith 45 (USC-MSA)