Riyad as-Salihin (The Meadows of the Righteous)
by Imam Nawawi
22. Chapter: On Good Counsel
Allah says, "The believers are brothers," (49:10),
and the Almighty said, reporting about Nuh, "I am giving you good counsel," (7:62) and about Hud, "I am a faithful counsellor to you." (7:68)
181. Abu Ruqayya Tamim ibn Aws ad-Dari reported the Prophet, may Allah bless him and grant him peace, said, "The deen is good counsel." We said, "For whom?" He said, "For Allah, His Book, His Messenger, the Imams of the Muslims and their common people."
182. Jarir ibn 'Abdullah said, "I gave allegiance to the Prophet, may Allah bless him and grant him peace, on the basis of performing the prayer, paying the zakat and giving good counsel to every Muslim."
183. Anas reported that the Messenger of Allah, may Allah bless him and grant him peace, said, "None of you can truly be said to believe until he wants for his brother what he wants for himself."