The rights of one Muslim over another are six
Prophet Muhammad (ﷺ) said:
“The rights of one Muslim over another are six.”
It was said: What are they, O Messenger of Allaah? He said:
1.If you meet him, greet him with salaam; (Saying Assalamualaykum)
2.If he invites you, accept the invitation;
3.If he asks for advice, give him sincere advice;
4.If he sneezes and praises Allaah(Alhamdulillah), say Yarhamuk Allaah (may Allaah have mercy on you);
5.If he falls sick, visit him;
6.And if he dies, attend his funeral.
Sahih Muslim (2162)
