Is It All Right to Accept a Gift for Praying for Someone?

(Questions from a young sister)

Sir, my father’s friend told me, “Ms. Mahya, I have a serious problem. Please pray especially for me, so that it will be resolved. I’ll bring you a gift.” A few days ago, he brought me a gold coin because his problem had been resolved. I refused to accept it at all and told him, “I didn’t pray in exchange for a gift.” Now he’s upset. He told my father, “Why did Mahya refuse my gift? Tell her to accept it.” Teacher, is it right to accept a gift for praying for someone else’s problem?