(31) باب النَّصِيحَةِ لِلإِمَامِ
It was narrated that Tamim Ad-Dari said:
"The Messenger of Allah said: 'Religion is sincerity (An-Nasihah).' They said: 'To whom, O Messenger of Allah? He said: 'To Allah, to His Book, to His Messenger, to the imams of the Muslims and to their common folk"'
Reference: Sunan an-Nasa'i 4198
In-book reference: Book 39, Hadith 50
English translation: Vol. 5, Book 39, Hadith 4203