The glory of martyrdom superseded the right of primogeniture; and the twelve imams, or pontiffs, of the Persian creed, are Ali, Hassan, Hosein, and the lineal descendants of Hosein to the ninth generation.

Without arms, or treasures, or subjects, they successively enjoyed the veneration of the people, and provoked the jealousy of the reigning caliphs: their tombs, at Mecca or Medina, on the banks of the Euphrates, or in the province of Chorasan, are still visited by the devotion of their sect.

Their names were often the pretence of sedition and civil war; but these royal saints despised the pomp of the world: submitted to the will of God and the injustice of man; and devoted their innocent lives to the study and practice of religion.

The twelfth and last of the Imams, conspicuous by the title of _Mahadi_, or the Guide, surpassed the solitude and sanctity of his predecessors.

He concealed himself in a cavern near Bagdad: the time and place of his death are unknown; and his votaries pretend that he still lives, and will appear before the day of judgment to overthrow the tyranny of Dejal, or the Antichrist.