I heard Messenger of Allah ﷺ saying, "The rights of a Muslim on the Muslims are five: to respond to the salaam, visiting the sick, to follow the funeral processions, to accept an invitation, and to reply to those who sneeze. (see Hadith 1239) (Using translation from Bukhārī 1240)
سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ حَقُّ الْمُسْلِمِ عَلَى الْمُسْلِمِ خَمْسٌ رَدُّ السَّلَامِ وَعِيَادَةُ الْمَرِيضِ وَاتِّبَاعُ الْجَنَائِزِ وَإجَابَةُ الدَّاعِي وَتَشْمِيتُ الْعَاطِسِ