A cubit devised by the second caliph, ‘Umar b. al-Khattab (13–23 AH), to measure lands of Sawad. It measured a cubit (prevalent) plus a grip of clasped hand and a thumb.
Al-tasq
Al-shukr
Al-tassuj
Al-sikkah
Al-ma’un
’ard al-quni
Al-ajir al-khas
Al-fals
Al-akl bi l-batil
Al-’awraj
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