What is "dahije"

The Dahije or Dahijas were the renegade Janissary officers who took power in the Sanjak of Smederevo (also known as the Belgrade Pashaluk), after murdering the Vizier Hadži Mustafa Pasha of Belgrade on 15 December 1801. The four supreme dahije leaders were Kučuk Alija, Aganlija, Mula Jusuf and Mehmed-aga Fočić. Rebels against the Ottoman sultan, they were defeated by the Serbs in the initial phase of the First Serbian Uprising, which is also called " Uprising against the Dahije" (ustanak protiv dahija).