Abstract
Purpose
This paper aims to view the weights and measures in the Hijaz during the first Abbasid period to define the fundamental measures on which the Islamic jurisprudence is based.
Design/methodology/approach
Applying a historical archive methodology, this paper highlights the significance of weight units as standard tools necessary for Muslims, in daily economic dealings, to control the value of goods and determine their size.
Findings
The most prominent weight units in Hijaz during the Abbasid period were limited to Ratl, Mann and spice. The most prominent units in the Hijaz during the Abbasid period were confined to Sa'aa, Al-Mudd and Al-Mukook. Not all units of weight in the Islamic State were used in all territories, but each territory specialized in particular units.
Originality/value
Weight units and measures are essential in religious transactions associated with determining the size of legitimate payments such as zakat, Diyah, dowry, expiation of the oath and delegation of the ritual. They are related to the rules of the act of worship of Wudu and ablution. With that in mind, implications on economic modeling and humanomics can be concluded.