It is narrated from Hazrat Anas (may Allah be pleased with him) that when the Prophet (peace and blessings be upon him) intended to attack any people, he would not attack at night but would wait until morning. If the sound of the call to prayer (adhan) was heard from there, he would stop; otherwise, he would attack. When the Prophet (peace and blessings be upon him) set out for the Battle of Khaybar, he reached Khaybar at night. In the morning, the Prophet (peace and blessings be upon him) mounted his ride and the Muslims mounted theirs. In short, when the Prophet (peace and blessings be upon him) entered the city, he said "Allahu Akbar" and proclaimed, "Khaybar is destroyed! When we descend into the courtyard of a people, the morning of those who have been warned is the worst." At that time, the people were coming out with their tools to work. When they saw the Prophet (peace and blessings be upon him) and the Muslims, they said, "Muhammad and his army have come." Hazrat Anas (may Allah be pleased with him) says, "I was sitting behind Hazrat Abu Talha (may Allah be pleased with him), and my feet would touch the feet of the Prophet (peace and blessings be upon him)."