Sunan Abi Dawud 4944
سنن أبي داود#4944SahihTamim al-Dari reported the Prophet (May peace be upon him) as saying; Religion conduct; religion consists in sincere conduct. The people asked; to whom should it be directed, Messenger of Allah? He replied :To Allah, his book, his Apostle, the leaders (public authorities) of the believers and all the believers, and the leaders (public authorities) of Muslim and the Muslims and the Muslims in general
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Muslim (55)
In-book reference: 43:172