What did the Prophet Muhammad (saw) do when he realized he was in a state of ritual impurity?
 Narrated Abu Huraira:                     Once the call (Iqama) for the prayer was announced and the rows were straightened. Allah's Apostle came out; and when he stood up at his Musalla, he remembered that he was Junub. Then he ordered us to stay at our places and went to take a bath and then returned with water dropping from his head. He said, "Allahu-Akbar", and we all offered the prayer with him.