while the Meccans would have to cross the valley and fight the Muslims in order to get water. The night before the battle, while the Muslims slept peacefully, a heavy rain fell.
In the Name of Allah, the Beneficent, the Merciful
"When He made the slumber fall upon you as a reassurance from Him and sent down water from the sky upon you, in order that He might purify you, and remove from you the fear of Satan, and strengthen your hearts and make firm (your) fret thereby". (Koran viii.11)
On the morning of Friday, the 17th of Ramadan, 2 A.H., (March 17th, AD), the two armies advanced and drew closer to one another. The rain been heavier on the side of Quraysh, making the ground soft and difficult. On the side of the Muslims, however, the rain had backed the sand down hard, making it easy for them to march. The Prophet (pbuh) preferred the men to fight in ranks. As they prepared to march he noticed someone had stepped out in front of the others.