Islamic State fighters that were taken prisoner by a rival jihadi group in Syria were given a taste of their own medicine, but with an educational twist.In the video released Tuesday and translated by MEMRI, the prisoners, shackled and wearing orange jumpsuits, like those taken captive by ISIS, are lined up before the camera, with their would-be executioners standing behind them. They are put on their knees in a manner reminiscent of those who are eventually shot at point blank range in ISIS propaganda videos.However, rather than kill the ISIS captives, the anti-ISIS video explains, "Oh Muslim youth, we are not lovers of killing and slaughtering.""We do not enjoy fear and terror," the video adds. The mock assassins holster their weapons, take off their masks and walk away.The prisoners are then given a sermon from Sheikh Muhammad Al-Khatib, the head of the Islamic Law Bureau of the Levant Front."It is our duty to place these prisoners on trial and to treat them with justice.To those who were tempted (by ISIS) we offer guidance. To those who strayed from the right path we offer shelter," he tells the prisoners."Oh you ISISissies of extremism and darkness, while black masks are your trademark, ours is white clarity. While beheadings are your religion and your hobby, our religion lies in reform and in the strengthening of the faith," he adds.The preacher tells the prisoners that those of them who repent will be pardoned, but those who continue to wage war against fellow Muslims will be subject to the sword.