Winner of the 2019 Islamic Development Bank (IsDB) Prize in Islamic Economics, Dr. Mabid Al-Jarhi, has delivered a lecture on the gains of switching from conventional to Islamic Finance. He argues that mainstream economics has many limitations, and therefore economists need to be able to identify the weaknesses and propose alternative frameworks. The principles of Islamic Economics provide such a framework. Prohibiting interest on money is not sufficient from an Islamic Finance point of view. Financing through trade contributes to addressing the inefficiency arising from search for trade partners. Together, prohibition of interest and financing through trade would improve allocation of resources in the economy. Dr. Al-Jarhi warns that there is a lot to be done to have a proper Islamic financial system in place. Proper regulations and governance are neccessary to address other kinds of inefficiencies arising from partnership of equity financing.