Whenever they hit the rock, it gave sparks.

Whenever they hit the rock, it gave sparks. Therefore, the Muslims asked Salman's opinion. Salman went to tell the Prophet [s] about the rock and to allow them to change the direction of the trench. The Prophet [s] came to the trench and took the pick-axe from Salman. He came into the trench. And he asked the Muslims to get him some water. The Prophet [s] poured the water…