"It was unnecessary to invite infidels in the abode of war to embrace Islam before seizing their persons, because they were ‘something which is the property of no particular person and may by law become the property of a Mooslim. ... They are classed with inanimate things ... thus liable to be reduced to state of property, like things which were originally common by nature’. For a raider, this entailed that ‘such of the inhabitants, as have fallen into his hands, are at his absolute disposal, and may be lawfully reduced to slavery’ ."