What did the Prophet Muhammad (saw) order his companions to do when they arrived at Al-Hijr with the water from its well?
 Narrated Ibn `Umar:                     When Allah's Apostle landed at Al-Hijr during the Ghazwa of Tabuk, he ordered his companions not to drink water from its well or reserve water from it. They said, "We have already kneaded the dough with its water. and also filled our bags with its water.'' On that, the Prophet ordered them to throw away the dough and pour out the water.