A.S
ummmm i read a book on BLACK JADU.it said that every evil act which u can think of is done by the person who is doing jadu.Some acts are so gross that you will not believe them,that i read in that book.
Secondly i have read in that book and also heard,may be i am incorrect,that mantar are actually when you read QURAN backwards,obviously it is the greatest sin.
MAY ALLAH PROTECT US ALL FROM THOSE WHO PERFORM JADU AND SUCH EVIL ACTS.