7 Standard of lengths, Area, Measures and Weights
Cognition of many of the Ahkam Shar’iah related to Al-Kharaj, Jizya, Zakat, Diyya, cutting and expiation requires the knowledge of the lengths, measures and weights which were used during the time of the Messenger (saw) and in the era of the honourable Sahabah (may Allah (swt) be pleased with them). As time prolonged away from the usage of these standards of lengths, measures and weights, the majority of them today, if not all of them, have become redundant. Thus, it has become difficult to know these measurements and their values corresponding to the lengths, measures and weights used today, which have become easier to deal with, easier to understand and able to precisely define.
Therefore, the standards of these lengths, measures and weights will be demonstrated to explain their reality and ratio to today’s lengths, measures and weights in order to make them clear, easy to deal with, simple to understand and precise in definition.
Length and Area
A Jareeb was the only basic unit of area. It was applied to measure arable land and define estate, where the Kharaj was estimated based on this basis. It is reported that Sh’abi said, “Indeed ‘Umar b. Al-Khattab surveyed the Sawad (arable land of Iraq) which reached 630,000,000 Jareeb.” In the book, al- Ahkaam al-Sultaniyya it is said, “The Jareeb is 10 Kasabaats times 10 Kasabaats. The Kafeez is 10 Kasabaats times a Kasabah. And the Kasabah is equal to 6 cubits. Hence the Jareeb is equal to 3600 cubit pieces and the Kafeez is equal to 330 cubits which is a tenth of a Jareeb.
Commenting on the parasang, it has been reported that Ja’afar bin Qudamah said that, “It is a cubit area and is equivalent to the Hashemite cubit, that is 9000 cubits.” Qalqashandi mentioned that, “The Hashemite cubit is equal to a cubit and a third of the hand which is the Mursala (long dispatched) cubit. And the cubit of the hand is equal to 6 handfuls (clasps)on the basis of the average handful. Each handful is the four fingers i.e. the smallest finger, ring finger, the middle and the index finger. Each finger is 6 little hairs laid across.