Malik said, "The sorcerer is the one who uses sorcery for himself and no one else uses that for him. It is like the one about whom Allah, the Blessed, the Exalted, said in His Book, 'They know the one who devotes himself to it will have no share in the Next World.' (Sura 2 ayat 102) I think that that person is killed if he does that himself."
Arabic : Book 43, Hadith 1594