New Religious Union.--A new bond of union thus took the place of the old tie of blood, which had been by far the strongest in Arabia. Every Moslem regarded every other Moslem as his brother, even though belonging to a different tribe. The claims of religion came to supersede all others; all natural tastes, all family affections, were taught to yield to them. Within a few years of his coming to Medina Mahomet had forbidden the use of wine and the pursuit of art, and had imposed on all women who adhered to him the use of the veil. In every way the community was taught to regard itself as separated from the former life of the country and from all who did not share the new faith. It was represented as the duty of believers to fight against all unbelievers: in this way the universal prevalence of the religion was to be brought about. The courage of the faithful was stimulated by the promise of rich booty and by the assurance that those who fell in battle would go straight to the joys of Paradise; and the wars they waged acquired in consequence a relentless character which was new in Arabia. They were allowed to fight in the sacred month, in which ancient custom ordained a universal truce. They fought with a gloomy determination, and used their victories with a relentless cruelty, which excited the consternation and horror of all witnesses. They did not scruple, as other Arabs did, to fight against their kinsmen. "Islam has rent all bonds asunder, Islam has blotted out all treaties," they said, when reproached with their disregard of old understandings. The prophet himself was foremost in this unrelenting policy. Captives taken in battle were slaughtered; a whole tribe was massacred which had joined the enemy, and had surrendered after a siege in the hope of merciful treatment.