Shaikh Muhammad Al-Uthaymeen | Authentic Statements
The Messenger of Allāh said, “The rights of the Muslim over his fellow Muslim brother are six: If you meet him then greet him with the salām; if he invites you then respond to his invitation; if he asks you for advice then advise him; if he sneezes and says Alhamdulillāh, say Yarhamukallāh (may Allāh have mercy on you); if he becomes sick then visit him; and if he dies then follow his funeral procession
