Oh wow! This is really scary - But i have heard i.e. my Mulana once told me that even Big Alims have jinns but their way of getting them to work for them is slightly different. I.e. The alim goes to a graveyard at night on specific night(s)…or maybe any night and makes a circle around himself sits there and recites certain surahs or the whole Quran from 12 midnight till dawn…As he is doing that the Jinns try hard to scare him and make him come out of that circle by showing him the most scariest things one can ever imagine i.e. killing/tutoring his family, him etc..scary sounds and all but if the Alim stays where he is and keeps on reciting in the end the jinn submits himself to the Alim while if he gets scared and tries to run away or goes out of the circle the Jinns then kill him…But thats like possessing a jinn with the Qurans help. And then as you know Alims get the jinn to do the right stuff unlike the witches who practice black magic.