Mudd is a volume measuring instrument that has been widely used as a reference measure in the Islamic region for the payment of zakat, fidyah and kaffarah. Many well-known literatures have their own definition of the mudd, but never being discussed technically in term of volume calibration. A mudd has been calibrated by National Metrology Institute of Malaysia (NMIM) to determine its’ volume, as an effort to standardize the volume of mudd at national level. The result shows that the volume of a mudd is 796 mL. Accurate measurement of the mudd volume is vital since the compensation is to be paid to the poor and needy peoples. This research to determine the volume of a mudd is hopefully to strengthen the institution related with the use of the mudd in the future.

Nowadays, dry volume measure like sa’ (gantang/) has been obsolete for use for trade and thus misunderstanding about its conversion to modern metric unit has increased. In Malaysia, the sa’ is still being referred for the purpose of zakat payment but converted to weight rather than volume albeit the fact that it is a dry volume measure. The objective of this paper is to give clear perception on the use of suitable metric unit so that the sa’ can be standardized throughout Malaysia. The mean is by determining the volume of sa’ Baghdadi that is being used as reference in state religious council around Malaysia. The calibration of sa’ volume is carried out in National Metrology Institute of Malaysia where the volume were determined using volumetric method. Yet, the result is not acceptable compared to other known literatures/works.