The companions of the Prophet (may Allah be pleased with them), were the most keen to attend the congregational prayer in the mosque and to perform it with reverence behind the Prophet, may the peace and blessings of Allah be upon him. Yet, if the Iqamah is pronounced some of them may hurry up to catch the congregational prayer. Therefore, the Prophet, may the peace and blessings of Allah be upon him, forbade them from doing so because the prayer is based on the reverence. It requires prior preparation which is the state of tranquility in which the Muslim should be in all the acts of worship, especially the prayer.