of Enlightenment, Discovery and colonialism. According to author Gilles Kepel, for many years in the 20th century, the fact that interest rates and insurance were among the "preconditions for productive investment" in a functioning modern economy led many Islamic jurists to strive to "find ways of" justifying the use of interest "without appearing to bend the rules laid down" in the Quran. In the largest Arab Muslim country, Egypt, Modernist Grand Mufti Muhammad Abduh declared collecting interest on bank deposits and loans permissible in 1900. From then up to the year 2002, successive Muftis have declared riba "prohibited, permissible, and prohibited and then permissible again". Revivalism In the late 20th century (mid-1970s) however, Islamic revivalists/activists/Islamists have worked to revive and rejuvenate the definition of interest as riba, to enjoin Muslims to lend and borrow at "Islamic Banks" that avoided fixed rates, and to mobilize to pressure governments to ban the charging of interest. In 1976, King Abdulaziz University in Jeddah organized the First International Conference on Islamic Economics in Makkah. At the conference, "several hundred Muslim intellectuals, Shari'ah scholars and economists unequivocally declared ... that all forms of interest [were] riba". By 2009, over 300 banks and 250 mutual funds around the world complied with this definition of riba and disavowed interest on loans or deposits, and by 2014 around $2 trillion in assets were "sharia-compliant". The prime example being modern scholars such as Grand Mufti of Saudi Arabia, Abd al-Aziz Bin Baz, based their fatwas about Riba definition on the basis of Ahadith that narrated by Ubadah ibn al-Samit. Scripture on riba Both the Quran and the Hadith of Muhammad mention riba. Orthodox scholars such as Mohammad Najatuallah Siddiqui and Taqi Usmani believe Quranic verses (2:275-280) define riba to mean any payment "over and above the principal" of a loan. Others disagree with this definition (such as non-orthodox economists Mohammad Omar Farooq and Muhammad Ahram Khan, and scholar Fazlur Rahman Malik), and/or emphasize the importance of ahadith (Farhad Nomani, Fazlur Rahman Malik and Abdulkader, with Farooq stating "it is broadly agreed that the Qur’an does not define riba"). Quran and prohibition Twelve verses in the Quran deal with riba (although not all of them mention the word). The word (usually translated as usury) appearing eight times in total — three times in 2:275, and once each in verses 2:276, 2:278, 3:130, 4:161 and 30:39. The Mekkan verse in Surah