Answer: 1. Loving good people and taking them as friends

2. Avoiding the company of evil people

3. Greeting and shaking hands with one's brothers

4. Visiting them when they are sick and supplicating to Allah to cure them

5. Saying: "Yarhamukallāh" (May Allah have mercy upon you) to the one who sneezes

6. Accepting their invitation to visit them

7. Offering advice to them

8. Supporting them when wronged and preventing them from committing oppression

9. Loving for them what one loves for oneself

10. Offering them help when needed

11. Refraining from harming them with words or deeds

12. Keeping their secrets

13. Refraining from insulting, backbiting, despising, envying, spying on, or cheating them