In the latest issue of its propaganda magazine Dabiq, the ISIS, also known as Daesh, has singled out those clerics who criticise them and said the "imams of kafir" (leaders of infidels) should be slaughtered.
Muslim clerics across the world, including India, have condemned the attacks by ISIS in Europe, Iraq, Syria and elsewhere, saying being a Muslim was about peace, not violence.
In September last year, nearly 1,000 Muslim clerics in India signed a fatwa against ISIS and other terror groups, saying they were "not Islamic organisations".
"One must either take the journey to dar-al-Islam, joining the ranks of the mujahid or wage jihad by himself with the resources available to him (knives, guns, explosives, etc.) to kill the crusaders and other disbelievers and apostates, including the imams of kafir, to make an example of them, as all of them are valid - rather, obligatory - targets," the Express newspaper reported, citing the magazine.
The magazine also identified those behind the Brussels terror attacks and praised them along with their photographs.