Malik related to me that he heard that Umar ibn al-Khattab saw a female slave belonging to Abdullah ibn Umar ibn al-Khattab. She was dressed like free (non-slave) women. He went to his daughter Hafsa and said, "Didn't I see your brother's slave-girl dressed like a free (non-slave) woman walking among the people and causing trouble?" Umar disapproved of that.