What did the Prophet Muhammad (saw) instruct regarding the leading of prayer when two people were leaving his presence?
 Malik b Huwairith reported:                      I came to the Apostle of Allah (may peace be upon him) along with a companion of mine, and when we intended to return from him, he said: When there is time for prayer, announce prayer, pronounce Iqama, and the oldest amongst you should lead the prayer.