Hadith.4078 - Al-Hasan ibn Mahbub narrated from Ibrahim al-Karkhi, who said
I asked Abu Abdullah (as) about a man who owns a large estate, and when the festivals of Mehregan and Nayrouz arrive, people gift him items, not as an obligation, but to seek closeness to him.
Imam (as) said: "Are they not Muslims?"
I said: "Yes."
Imam (as) said: "Then let him accept their gifts and reciprocate them."