An Arabic manuscript:

الصحاح في اللغة
الجوهري، اسماعيل

al-Sihah fi al-Lughah
al-Jawhari, Ismail

This Abbasid manuscript, al-Jawhari's al-Sihah fi al-Lughah (MS:492.73:J41sA), is a treatise on the Arabic language copied by Muzaffar bin Mahmud ibn Abi Qasim al-Ardabili, dated A.H. 638 / A.D. 1240. This manuscript was produced in the last years of the Abbasids who were annihilated by the Mongols in 1258. The sacking of Baghdad resulted in the destruction of many libraries containing priceless manuscripts. The surviving manuscripts and calligraphers were taken by the invaders to work in the Mongols' courts in Central Asia.

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