An-Nawawy’s Forty Hadiths: (7) Advice and Sincerity
On the authority of Tameem ibn Aus ad-Daree (may Allah be pleased with him), The Prophet (ﷺ) said, “The deen (religion) is naseehah (advice, sincerity).” We said, “To whom?” He (ﷺ) said, “To Allah, His Book, His Messenger, and to the leaders of the Muslims and their common folk.” [Muslim]