https://www.btstories.com/gehazi/

After Naaman was healed at the Jordan River, he and his men went back to the prophet’s house and stood before him. Naaman said, “Today I’ve learned, and now know, that there’s no god on earth except the God of Israel. Please accept my humble gift.”

Elisha said, “As sure as God lives, I won’t take a gift from you.” Naaman insisted, but the prophet still refused.