Assalam alaikum,
The Messenger of Allah, Prophet Muhammad, may Allah bless him and grant him peace, said:--" A Muslim has 6 Rights over another Muslim. They (his companions) asked: What are they, O Messenger of Allah?" He said:--
" When you meet him, greet him with peace (Salaam).
When he invites you, accept his invitation.
When he seeks your advice, advise him.
When he sneezes and then Praises Allah, invoke Allah's blessings upon him.
When he falls ill, viisit him.
When he dies, follow his funeral."( Sahih Muslim-2162)
We should Note these Rights well and discharge them amongst us, Muslims Brothers and Sisters accordingly.
Best Wishes.