In The Name of Allaah, The Most Merciful, The Bestower of Mercy.

Sincere Advice to The Muslims: It is to guide them towards the beneficial things related to the affairs of their Aakhirah and the Dunyaa, and to aid them in that; guide them towards rectification in affairs related to their Dunyah and Aakhirah; love them for the sake of Allaah, aid them in truth, co-operate with them in good and guidance and not in sin and transgression; clarify the truth for them and advise them with it, and disapprove evil if they violate Allaah’s Right etc [Ref 1]

Teach them what they are ignorant of in their religion and aid them upon that through speech and action; repel harm from them and seek what is beneficial for them; command them with good and forbid them from evil with softness and sincerity and be compassionate towards them; respect their elder ones and have mercy on their young ones; speak to them with beautiful admonition and abandon deceiving and envying them; love for them what you love for yourself and hate for them what you hate for yourself; defend their wealth, honour and other than that through speech and action [Ref 2]

[Ref 1: An Excerpt from Sharh Arba’een An-Nawawi by Shaikh Saaleh Aala Shaikh (hafidhahullaah)] page: 81]; [Ref 2: An Excerpt from Sharh Saheeh Muslim: 2/39]