The involvement of institutions, governments, and various conferences and studies on Islamic banking (Conference of the Finance Ministers of the Islamic Countries held in Karachi in 1970, the Egyptian study in 1972, The First International Conference on Islamic Economics in Mecca in 1976, and the International Economic Conference in London in 1977) were instrumental in applying the application of theory to practice for the first interest-free banks. At the First International Conference on Islamic Economics, "several hundred Muslim intellectuals, sharia scholars and economists unequivocally declared ... that all forms of interest" were "riba".