Tamim al-Dari reported the Prophet ﷺ 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 Messenger, 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.
Hadith Referenceسنن ابي داود / كتاب الأدب / 4944
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم (55)
Narrated Jarir: I swore allegiance to the Messenger of Allah ﷺ promising to hear and obey, and behave sincerely towards every Muslim. Abu Zurah said: Whenever he sold and bought anything, he would say: What we took from you is dearer to us than what we gave you. So choose (as you like).
Hadith Referenceسنن ابي داود / كتاب الأدب / 4945
Hadith Gradingالألبانی:صحيح الإسناد | زبیر علی زئی:ضعيف, إسناده ضعيف, يونس بن عبيد مدلس, والحديث السابق (الأصل : 4944) يغني عنه, انوار الصحيفه، صفحه نمبر 172