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Borrowed from Arabic يَثْرِب (yaṯrib).
Yathrib
- (historical) the original name of Medina before the advent of Islam
1976, Muḥammad Ḥusayn Haykal, The Life of Muhammad[1], The Other Press, →ISBN, page 164:Muhammad did not have to wait more than a few years before the first signs of victory began to loom on the horizon, in the direction of Yathrib.
the original name of Medina