The life and reign of the caliph Omar, distinguished by such great and striking events, were at length brought to a sudden and sanguinary end. Among the Persians who had been brought as slaves to Medina, was one named Firuz, of the sect of the Magi, or fire-worshippers. Being taxed daily by his master two pieces of silver out of his earnings, he complained of it to Omar as an extortion. The Caliph inquired into his condition, and, finding that he was a carpenter, and expert in the construction of windmills, replied that the man who excelled in such a handicraft could well afford to pay two _dirhems_ a day. "Then," muttered Firuz, "I'll construct a windmill for you that shall keep grinding until the day of judgment." Omar was struck with his menacing air. "The slave threatens me," said he, calmly. "If I were disposed to punish anyone on suspicion, I should take off his head"; he suffered him, however, to depart without further notice. Three days afterward, as he was praying in the mosque, Firuz entered suddenly and stabbed him thrice with a dagger. The attendants rushed upon the assassin. He made furious resistance, slew some and wounded others, until one of his assailants threw his vest over him and seized him, upon which he stabbed himself to the heart and expired. Religion may have had some share in prompting this act of violence; perhaps revenge for the ruin brought upon his native country. "God be thanked," said Omar, "that he by whose hand it was decreed I should fall was not a Moslem!" The Caliph gathered strength sufficient to finish the prayer in which he had been interrupted; "for he who deserts his prayers," said he, "is not in Islam." Being taken to his house, he languished three days without hope of recovery, but could not be prevailed upon to nominate a successor. "I cannot presume to do that," said he, "which the prophet himself did not do." Some suggested that he should nominate his son Abdallah. "Omar's family," said he, "has had enough in Omar, and needs no more." He appointed a council of six persons to determine as to the succession after his decease, all of whom he considered worthy of the caliphate; though he gave it as his opinion that the choice would be either Ali or Othman. "Shouldst thou become caliph," said he to Ali, "do not favor thy relatives above all others, nor place the house of Haschem on the neck of all mankind "; and he gave the same caution to Othman in respect to the family of Omeya. Ibn Abbas and Ali now spoke to him in words of comfort, setting forth the blessings of Islam, which had crowned his administration, and that he would leave no one behind him who could charge him with injustice. "Testify this for me," said he, earnestly, "at the day of judgment." They gave him their hands in promise; but he exacted that they should give him a written testimonial, and that it should be buried with him in the grave.