Sheikh Yakubu Musa Katsina is a popular preacher in Nigeria. He is also the leader of the Izala revivalist sect in Katsina. The Izala, or Jama’at Izalatil Bidiawa Iqamatus Sunnah (Movement Against Negative Innovations and for Orthodoxy) is an activist salafi movement that calls for a return to the practices of the Prophet Muhammad and a true practice of Islam. His family comes from Katsina, the predominantly Muslim city in northern Nigeria, and he is outspoken against corruption in the country.