摘要：In Indonesia, frequently occured the differences on initial determination of islamic lunar month such as Ramadhan, Syawal and Zulhijjah. This difference can not be separated from the two major methods of determining begining of lunar month namely ḥisāb (calculation) and ru’yat (observing hilāl). Apart from debate between ḥisāb and ru’yat, another issue that is also often raises is applicability rukyah and ḥisāb, known as validity of maṭlā‘. Meaning of the maṭlā‘s concept now seen no longer adequate and unable to overcome that differences. For that reason, reinterpretation of the maṭlā‘s meaning is something that is very important. However it should be noted that reinterpretation should not be out of bounds from Shar'i limitation and on the other hand must involve basic science of astronomy so can make it more up to date and more easily accepted rationally.
关键词：rekoseptualisasi; maṭlā‘; bulan Qamariyah; hilāl
