Muslim Right on other Muslim

'Ali Raziyallahu 'anhu narrates that Rasulullah Sallallahu 'alaihi wasallam said:

A Muslim has six acts of kindness for another

I) Greet him with Salam when he meets him.

2)Accept his invitation when he extends one.

3) If he sneezes (and says Alhamdulilliih) reply him by saying Yarhamukallah (may Allah have mercy on you).

4) Visit him when he is sick.

5) Join his bier when he dies. And 

6) Choose for him what he likes for himself.

(lbne-Majah Hadith No 1433)