One, two, skip a few ... ninety-nine, a hundred

From "The Life of Muhammad (S)", by Abdul Hameed Siddiqui:
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"As types of the ideal Arab hero we may take Shanfara of Azd and his comrade in foray, Ta'abbata Sharr. Both were brigands, outlaws, swift runners, and excellent poets:

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............Of the former it is said that he was captured when a child from his tribe by the Banu

............Salaman, and brought up among them; he did not learn his origin until he had grown up,

............when he vowed vengeance against his captors, and returned to his own tribe. His oath

............was that he would slay a hundred men of Salaman; he slew ninety-eight, when an

............ambush of his enemies succeeded in taking him prisoner. In the struggle one of his

............hands was hewn off by a sword stroke, and, taking it in the other, he flung it in the

............face of a man of Salaman and killed him, thus making ninety-nine. Then he was

............overpowered and slain, with one still wanting to make up his number. As his skull lay

............bleaching on the ground, a man of his enemies passed by that way and kicked with his

............foot; a splinter of bone entered his foot, the wound mortified, and he died, thus

............completing the hundred.*

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* A Literary History of the Arabs (Cambridge 1933), p. 79."

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...might just be a made up story, who knows. Makes an interesting tale nonetheless...