It is possible to make the voice of your enemy hoarse by doing an amal. The amal is so powerful that it can make the enemy suffer from severe throat problems. It may become difficult for them to talk or even swallow food, normally.
The amal is as follows:
Recite Surah Kausar 300 times after each namaz while focusing on your enemy. Read Durud Shareef 11 times before and after the recitation. Then pray to Allah (swt) according to the pain you want to inflict upon the enemy. For example: “Oh Allah! Please make my so and so enemy (mention his and his mother’s name) suffer from a pain in the throat because of the humiliation that he has caused me” If you want the enemy to suffer from other swallowing problems, whooping cough (pertussis), hoarseness in voice or tonsillitis then you can pray accordingly. You should continue doing this amal till the time you want to make your enemy suffer from the above mentioned problems.
Warning: Do not do this amal in an unjustified way. If the amal is done in an unjust way then I am warning you before hand, that the person doing the amal may himself or herself get into serious trouble, be it rajat/ insanity, illness etc. Before you decide to do this amal please go through my other posts:
The amal for destroying one’s enemy (Ilm-e-tabahi)
The preconditions for casting revenge spells
Keep Me In Your Prayers