عيادة المريض
Visiting a sick person is named among the core rights one Muslim owes another — a social and emotional support practice built directly into the tradition's approach to illness.
حَقُّ الْمُسْلِمِ عَلَى الْمُسْلِمِ خَمْسٌ: رَدُّ السَّلَامِ، وَعِيَادَةُ الْمَرِيضِ، وَاتِّبَاعُ الْجَنَائِزِ، وَإِجَابَةُ الدَّعْوَةِ، وَتَشْمِيتُ الْعَاطِسِ
“The right of a Muslim over a Muslim is five: returning the greeting, visiting the sick, following funeral processions, accepting invitations, and responding to one who sneezes.” (meaning, not a literal translation)
A separate narration adds that whoever visits a sick person is said to remain 'in the harvest of Paradise' until returning (Sahih Muslim 2568).
Commentators frame this as recognizing illness as a social, not just physical, event — the sick person's isolation and emotional state are treated as part of what needs tending to, alongside any physical remedy.