Qutaybah ibn Sa'id narrated to us: Layth narrated to us. (Another chain:) Muhammad ibn Rumh narrated to us: al-Layth informed us, from Yahya ibn Sa'id, from 'Abdullah ibn 'Amir ibn Rabi'ah, that 'A'ishah said: The Messenger of Allah, peace and blessings be upon him, could not sleep on the night of his arrival in Medina, so he said, "If only a righteous man from among my companions would guard me tonight." She said: While we were in that state, we heard the clatter of weapons, and he said, "Who is this?" He said, "Sa'd ibn Abi Waqqas." The Messenger of Allah, peace and blessings be upon him, said, "What has brought you?" He said, "Fear for the Messenger of Allah, peace and blessings be upon him, came upon me, so I came to guard him." The Messenger of Allah, peace and blessings be upon him, then supplicated for him, and afterward slept. In the narration of Ibn Rumh: We said, "Who is this?"