The Arab expedition in Central Asia in 642. Herat and Badghis submitted without a blow, and the first serious check to their advance was met in the Murghab valley. A second expedition occupied Juzjan, Faryab, Talaqan, and Balkh, territories of Afghanistan.
Gibb, H. A. R. The Arab conquests in Central Asia. London: The Royal Asiatic Society, 1923. viii, 102 p.
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