If Imam did not show up, another should lead the prayer
320. Mughirah bin Shu´bah narrated that he participated in the expedition of Tabuk along with the Messenger of Allah sallahu alayhi wa sallam. Al-Mughirah said: The Messenger of Allah sallahu alayhi wa sallam went out to answer the call of nature before the morning prayer, and I want along with him and varried with me a jar (full of water). When the Messenger of Allah sallahu alayhi wa sallam came back to pour water on his hands out of the jar, and he washed his hands three times, then washed his face three times. He then tried to sticj out his forearms from the sleeves of his cloak, but since the sleeves were tight, he pulled his hands from inside of the cloak, and then brought out his forearms from under the cloak, and washed his forearms up to the elbows and then wiped over his light boot, and then moved on. Al-Mughirah said: I also moved along with him until we came to the people (and found that) under the Imamah of ´Abdur-Rahman bin ´Auf. The Messenger of Allah sallahu alayhi...