מְכַשֵּׁפָ֖ה לֹ֥א תְחַיֶּֽה׃ (ס)
Huwag mong hahayaang mabuhay ang mangkukulam.
Sefer HaMiddot
70. One who deals with impure names and witchcraft becomes poor (t.n. The commentators do not provide a citation here, a possible hint can be from the verse Shemos 22:17 -- a sorcerer do not let live -- which can also be read -- will not live -- which we find elsewhere in the teachings of our Sages means that the person will become poor -- who is likened to the dead. T.n. Also see the entry sorcery #2).