Silsilat al-Ahadith al-Sahihah

Abdullah bin Buraidah narrates from his father that when the Messenger of Allah (peace and blessings be upon him) returned from a military expedition, a black slave-girl came to him and said: "I had vowed that if Allah returned you victorious, I would beat the drum before you." The Messenger of Allah (peace and blessings be upon him) said: "If you have made a vow, then do so (beat the drum), otherwise do not." She began to beat the drum. Abu Bakr (may Allah be pleased with him) came, and she continued beating it. Other companions came, and she remained in that state. But when Umar (may Allah be pleased with him) came, she hid the drum under herself and put on her veil. The Messenger of Allah (peace and blessings be upon him) said: "Umar! Satan is afraid of you. I and these people were sitting here (and she was beating the drum), but when you entered, she did like this and this."