Stabbed by a Persian assassin, the second caliph Umar died from his wounds after three days. He had
Stabbed by a Persian assassin, the second caliph Umar died from his wounds after three days. He had been head of the Muslims for 10 years, from 634 to 644 CE, and during his time had quickly expanded Muslim territory by conquering the Sassanian Empire and more than two-thirds of the Byzantine Empire. -- source link
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