Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said, “A Muslim has six rights over another Muslim: to greet him with peace when he is met, to answer his invitation when invited, to advise him when he seeks counsel, to bless him when he sneezes and praises Allah, to visit him when he is sick, and to follow his funeral when he dies.”
Source: Ṣaḥīḥ Muslim 2162
Grade: Sahih (authentic) according to Muslim
عَنْ أَبِي هُرَيْرَةَ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ حَقُّ الْمُسْلِمِ عَلَى الْمُسْلِمِ سِتٌّ إِذَا لَقِيتَهُ فَسَلِّمْ عَلَيْهِ وَإِذَا دَعَاكَ فَأَجِبْهُ وَإِذَا اسْتَنْصَحَكَ فَانْصَحْ لَهُ وَإِذَا عَطَسَ فَحَمِدَ اللهَ فَسَمِّتْهُ وَإِذَا مَرِضَ فَعُدْهُ وَإِذَا مَاتَ فَاتَّبِعْهُ
2162 صحيح مسلم كتاب السلام باب من حق المسلم للمسلم رد السلام