It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that on the day of the Battle of the Trench, the polytheists kept the Prophet (peace and blessings be upon him) so occupied that he was unable to perform four prayers at their prescribed times, until a part of the night had passed. After being freed, the Prophet (peace and blessings be upon him) ordered Sayyiduna Bilal (may Allah be pleased with him), who gave the call to prayer (adhan), then the iqamah was said, and the Prophet (peace and blessings be upon him) led the Zuhr prayer. Then, after the iqamah, he led the Asr prayer. Then, after the iqamah, he led the Maghrib prayer. Then, after having the iqamah called, he led the Isha prayer.