This article discusses the profit-sharing system as one of the main pillars in Islamic economics, focusing on its ideal concept, implementation, challenges, and development opportunities in Islamic financial institutions in Indonesia. This system is based on the principles of justice, partnership, and shared responsibility through mudharabah and musyarakah contracts. Although normatively acknowledged and regulated by Islamic finance fatwas and regulations, its practical application still faces various obstacles such as low Islamic financial literacy, weak supervision, and the dominance of fixed-margin-based products. Nevertheless, digital technology development, the potential of the MSME sector, and the strengthening of Islamic financial regulations and education provide significant opportunities to promote transformation toward a more inclusive and just financial system. Therefore, synergy among financial institutions, regulators, and society is required to optimally realize the implementation of the profit-sharing system in Islamic economic practices.

This study aims to determine the potential and obstacles of the digital economy in developing MSMEs in the city of Medan and then reviewed from the perspective of Islamic business ethics. This study is a descriptive qualitative type that presents narrative data about objects found in the field. The subject of this study is the Medan City Cooperative and MSME Service and the object is the digital economy. This research is motivated by the Indonesian government's efforts to make MSMEs go digital coupled with the existence of a pandemic that forces economic activities to increasingly move towards digitalization so that MSMEs as a milestone in economic progress must actively move to follow the changing times. The data collection techniques used are interviews, observations, and documentation. The results obtained are: In the city of Medan, the digital economy system has been intensified for MSME actors, the Medan City Cooperative and MSME Service supports through consultation, training, and assisting MSME actors to develop their businesses digitally. Until now, there have been 3000 Medan City MSMEs that have registered as Fostered MSMEs at the Medan City Cooperative and MSME Service. This means that all the breakthroughs that have been made by the Medan City Cooperative and UMKM Service bring good news for the potential of the digital economy. However, in addition to all that, there are still many UMKM actors who are not aware of the digital economy, which is caused by low human resources, not yet technologically proficient, and still consider the system troublesome and choose to be stuck with a manual system.

Musyarakah mutanaqishah is musyarakah or syirkah ownership the assets (goods) or capital of one of the parties (shariq) are reduced due to gradual purchase by other parties. As well as a musyarakah agreement mutanaqishah is a combined contract between a musyarakah contract and a contract ijarah. Sharia syndicated financing is financing provided by two/more Islamic banks or financial institutions, with the same terms and conditions, using the same documents and administered by one bank. Regarding information on syndicated financing using a musyarakah agreement Mutanaqishah is still not widely known by the wider community until now This. So this research will focus on discussing contracts musyarakah mutanaqisah used in syndicated financing. Because This contract is a contract that needs to be socialized and more publicized the banking sector, because its existence is not widely known by the public common among other contracts which are also used for syndicated financing in sharia banking in Indonesia, after previously using contracts murabahah and ijarah mun tahiya bit tamlik.