Muwatta Imam Malik Book of Hudud, Hadith 16

Malik related to me from Yahya ibn Said that Sulayman ibn Yasar informed him that Abdullah ibn Abbas ibn Abi Rabia al-Makhzumi said, "Umar ibn al-Khattab gave me orders about the slaves of Quraysh and we flogged some of the slave-girls of the muslim lands fifty times each for fornication."

حَدَّثَنِي مَالِكٌ، عَنْ يَحْيَى بْنِ سَعِيدٍ، أَنَّ سُلَيْمَانَ بْنَ يَسَارٍ، أَخْبَرَهُ أَنَّ عَبْدَ اللَّهِ بْنَ عَيَّاشِ بْنِ أَبِي رَبِيعَةَ الْمَخْزُومِيَّ قَالَ أَمَرَنِي عُمَرُ بْنُ الْخَطَّابِ فِي فِتْيَةٍ مِنْ قُرَيْشٍ فَجَلَدْنَا وَلاَئِدَ مِنْ وَلاَئِدِ الإِمَارَةِ خَمْسِينَ خَمْسِينَ فِي الزِّنَا .