On the authority of Tameem ibn Aus ad-Daree (رَضِيَ ٱللَّٰهُ عَنْهُ):
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]