The man casting evil would be commanded to perform ablution, and then the man affected was washed with it.
Sunan Abi Dawud Book 29, Hadith 26
← Previous Hadith The evil is genuine.

Sunan Abi Dawud Book 29, Hadith 25 Next Hadith → I heard the Messenger of Allah (ﷺ) as saying: Do not kill your children secretly, for the milk, with which a child is suckled while his mother is pregnant, overtakes the horseman and throws him from his horse.

Sunan Abi Dawud Book 29, Hadith 27