Fungsi Uang dalam Perspektif Abu Ubaid: Telaah Pemikiran Ekonomi Islam Klasik dan Relevansinya Saat Ini

The history of Islamic economic thought has developed since the time of the Prophet Muhammad and continues to experience enrichment by Muslim scholars. These thinkers tried to build Islamic economic concepts that are relevant to the context of their times, while still based on the Qur'an and Hadith. One of the important figures in Islamic economic thought is Abu Ubaid, whose main work Kitab al-Amwal is the main reference in understanding the classical Islamic economic system. In his work, Abu Ubaid emphasizes the importance of justice as the main principle in economic management, including the use of money. He views money as having two main functions, namely as a standard of value and a medium of exchange. His views show strong relevance to the modern economic system, where the function of money still plays an important role in economic activity. This paper aims to examine in depth Abu Ubaid's thoughts on the function of money and assess its relevance in the context of contemporary economics.