Abdullah bin Ayyash al-Makhzumi (may Allah be pleased with him) said: Sayyiduna Umar (may Allah be pleased with him) ordered me, together with some young men of Quraysh, and we flogged slave-girls of the state fifty lashes each for zina.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحدود / 17089