The Prophet gave the signal of departure; but to prevent the accidents which any haste would inevitably cause among the great masses of such a gathering, he tugged the bridle of swift Qaswa to him, twisting her head round until her nostrils touched her ribs, whilst he slid on to her withers; unceasingly exhorting all: 'Go quietly, O ye people!' On arriving at Muzdalifa, he said the prayer, "Isha," and next day, after the daybreak prayer, riding his she-camel, led by Bilal, and protected from the sun by a mantle that Usama, riding behind him, held over his head, he went into the valley of Mina, in order to throw seven stones against each of the three pillars of rude masonry, called "Jumurat." This is in commemoration of the pebbles thrown by Abraham to drive away the Devil who thrice tried to stop him at that spot. After that, the Prophet, to prove his gratitude for the sixty-three years of life granted to him by the Creator, freed sixty-three slaves and, with his own hands, sacrificed sixty-three camels, their flesh and skins being distributed among the pilgrims by Ali, acting under Mohammad's orders. He then had his head shaved by Mi'mar ibn Abdullah, who commenced at the right temple and finished at the left. Finally, after having once more performed the "Tawaf" round the Kab'ah, and drunk for the last time some Zamzam water in a vase offered to him by his uncle Abbas, the Superintendent of the Well, he set out again on the road to Al-Madinah. Such was the pilgrimage called the "Valedictory Visitation," which overwhelmed the Believers with such deep emotion by apprising them that Mohammad's Mission was fulfilled. This pilgrimage serves as a pattern for all the pilgrimages which, during thirteen centuries, have brought annually to these Holy Places, one hundred and fifty to two hundred thousand pilgrims, collected from all parts of the universe. Any pilgrimage, be the religion giving rise to it what it may, causes inexpressible emotion by the sight of so many faces beaming with faith; and the most sceptical among the onlookers finds it difficult to escape the contagion of this outbreak of fervour. But, among the majority of the spectators, inadmissible practices soon overcome sympathetic feelings and change them into aversion. At Makkah, doubtless, as in all religious centres without exception, pilgrims are ruthlessly exploited; but in this city, at least, the traffickers may be excused: they dwell in the most inhospitable of all deserts and have no other means of getting a living.