The hour arrived when the fate of Islam was to be decided. It was on a Friday, the seventeenth day of the month of Ramadhan. [Illustration: _Believers perceiving the New Moon of the Month of Ramadhan._] Hubbab-ul-Ansari, renowned for his sage counsels, craved permission to be heard, 'O Prophet!' said he; hath the spot where we are now encamped been pointed out by a Revelation, and therefore we are forbidden to go forward or retreat? Or are we free to discuss the choice of ground befitting warlike strategy?'--'No Revelation hath imposed this place upon me. Speak freely and explain any stratagem that thou dost judge the most advantageous.'--'In that case, strike the tents,' Hubbab rejoined, 'and with our troops, go down the channel of the Wadi and fill up every well we pass until arriving at the last. There thou must dig a reservoir that will fill itself with all the water running under the sand, whilst the wells higher up, which we shall have choked, will have run completely dry. I know the strength and direction of the stream. Thanks to this reservoir, our warriors, during the battle, will be able to refresh their burning throats or relieve their sufferings if wounded, but our adversaries will not find anywhere in the surrounding country a single drop of water wherewith to slake their thirst.' This piece of advice seemed reasonable to the Prophet, who carried out Hubbab's idea to the letter, and so fixed the future battlefield, for the Unbelievers would be forced to come and try to wrest from him the only spot where water was to be found. Then Sad ibn Muaz spoke: 'O Prophet! allow us to build for thee an "arish" (shelter from the sun's rays) on this hill, from which thou wilt be able to watch every move in the fighting. Near thee, thy she-camel shall be hobbled, and we will gallop into the enemy's midst. Should Allah grant us victory, thine eyes will be gladdened by the sight of our valour in defending the faith. Should fate be against us, thou wilt have naught else to do than to climb into the saddle and rejoin our rearguards, as devoted to thee as we are, and who will cover thy retreat.' The Prophet accepted, adding: 'Allah will reward you all by rendering assistance more efficacious than anything ye can imagine.' The Believers cut down twigs of "araq" which they wattled, and so set up a shelter thatched with sheaves of "surfah". Mohammad retired therein in company with Abu Bakr, and when the advanced groups of enemy horsemen made their appearance, wheeling about defiantly before his eyes: 'O Allah!' he exclaimed, 'so there are the Quraish at last; urged on by monstrous pride to brave Thee and call Thy Messenger a liar!'