DEUT1114 ... it is clearly forbidden in all cases to pray that another person die. This is so even if one is praying only that some misfortune befall an enemy. Torah commands, for example, that if you see the mule of one who hates you collapse under its burden and you refuse to help, you will be abandoned just as you abandoned the animal (this verse). Torah is concerned here that you not cause the animal's owner any material loss. How much more is Torah concerned that you not cause your enemy to lose his life. ... There is another prohibition involved, namely, that this kind of curse, in fact any curse of one's fellow, is forbidden. This is so even if done without explicitly naming the intended victim. In fact, if one pronounces a curse on another by name, the cursor is flogged. Hayyim Palaggi, Responsa Hikkeke Lev, Terumah 4b; Maimonides, Mishneh Torah-Book of Judges, "Sanhedrin" 26:1.