Hadith.4075 - Thuwair ibn Abi Fakhitah narrated from his father, from Imam Ali (as), who said
"Kisra sent a gift to the Prophet (may Allah (swt) bless him and his family), and He (sw) accepted it.
Caesar also sent a gift to the Prophet (may Allah (swt) bless him and his family), and He (sw) accepted it. Likewise, the kings sent gifts to Him (sw), and He (sw) accepted them."