What did Bilal do to announce the prayer after informing Prophet Muhammad (saw) of it at Al-Abtah?
 Narrated `Aun bin Abi Juhaifa:                     My father said, "I saw Allah's Apostle at a place called Al-Abtah. Bilal came and informed him about the prayer and then came out with a short spear (or stick) and planted it in front of Allah's Apostle at Al-Abtah and pronounced the Iqama."