The Messenger of Allah ﷺ said, "The Muslim has six rights upon his fellow Muslim."Someone asked, "What are they, Messenger of Allah?"He replied, "When you meet him, greet him with salam. When he invites you, accept his invitation. When he seeks your advice, give him sincere counsel. When he sneezes and praises Allah, say 'yarhamuk Allah' to him. When he falls ill, visit him. And when he dies, follow his funeral procession."
أن رسول الله ﷺ قال: حق المسلم على المسلم ست قيل: ما هن يا رسول الله؟ قال: إذا لقيته فسلم عليه، وإذا دعاك فأجبه، وإذا استنصحك فانصح له، وإذا عطس فحمد الله فشمته، وإذا مرض فعده، وإذا مات فاتبعه.