Prayer is the mainstay of religion, and its performance is obligatory for every Muslim. The Prophet (may Allah's peace and blessings be upon him) demonstrated the manner of praying and taught it to the Ummah, and he also taught us the order of prayers and what should be given precedence in case of conflict. The performance of the obligatory prayers takes precedence over offering the supererogatory ones. In this Hadīth, the Prophet (may Allah's peace and blessings be upon him) points out that when the muezzin proclaims the iqāmah (the commencement of prayer) in the mosque, no one should embark upon the supererogatory prayer; rather, one should leave it and perform the obligatory prayer. His words "there is no prayer" probably mean that there is no prayer with a complete reward, or that the supererogatory prayer is not valid altogether after the proclamation of the iqāmah for the obligatory prayer; so, one should cut off the supererogatory prayer and perform the obligatory one. It was said: If he was in the first Rak‘ah, he should cut off the prayer. Yet, if he is in the second Rak‘ah, he can complete the prayer in a quick manner. This all applies to those in the mosque, which is the main rule regarding prayer. In the Hadīth: Prohibiting the performance of the supererogatory prayer if the iqāmah for the obligatory one is proclaimed in the mosque..