Sayyiduna Tamim Dari (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings of Allah be upon him) said: "The religion is sincerity (good counsel)." He said this three times. The people asked, "O Messenger of Allah (peace and blessings of Allah be upon him)! For whom?" The Noble Prophet (peace and blessings of Allah be upon him) replied: "For Allah, for His Book, for His Messenger, for the leaders of the Muslims (the narrator is in doubt, or perhaps these are the words) for the leaders of the believers, and for their common people (to be sincere to them)."
Hadith Referenceصحیح ابن حبان / كتاب السير / 4574
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «الإرواء» (26)، «غاية المرام» (332): م.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط مسلم
Sayyiduna Tamim Dari (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings of Allah be upon him) said: "Be aware! Religion is sincerity. Be aware! Indeed, religion is sincerity. Be aware! Indeed, religion is sincerity." The people asked: "O Messenger of Allah (peace and blessings of Allah be upon him)! For whom?" The Noble Prophet (peace and blessings of Allah be upon him) replied: "For Allah, His Book, His Messenger, the leaders of the Muslims, and their common people (to be sincere to them)."
Hadith Referenceصحیح ابن حبان / كتاب السير / 4575
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «الإرواء» (26)، «غاية المرام» (332): م.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح