The history of Islamic economics uncovers that weight and measurement tools used by traders or sellers were
regularly supervised by the government’s institution, called al-ḥisba. Parallel to this historical fact, in Indonesia
the similar institution is currently placed under the authority of the Ministry of Trade and Commerce regulated
under the Law No.2 of 1981. This study focuses to the actual practices of the law. Data for this study is gathered
from conducting serial interviews with traders, the authorities and conducting observation to the markets
activities. The finding reveals that the authorized institution has not yet worked effectively in conducting its
tasks that limitedly applies a seal to the measurement tools. These practices have untouched moral aspect of the
business activities. It hardly stepped forward to supervise the traders and sellers and also hardly applied law
enforcement. It suggests that this authorized institution, such as al-ḥisba, has the authority to enforce the law
in the framework of amar ma’ruf nahy munkar.
Key Words: al-Ḥisba, legal metrology, muḥtasib, pemerintah, perdagangan