عَن ثَوبَانَ رَضِيَ اللهُ عَنهُ قَالَ قَالَ رَسُولُ اللهِ صَلَّى اللهُ عَليهِ وَسَلَّمَ : إنَّ الْمُسْلِمَ إذَا عَادَ أَخَاهُ الْمُسْلِمَ لَمْ يَزَلْ فِي خُرْفَةِ الْجَنَّةِ حَتَّى يَرْجِعَ (مسلم 2/318)
Hadhrat Thaubaan (Radhiyallahu Anhu) reports that Rasulullah (Sallallahu Alaihi Wasallam) said: “The one who visits his Muslim brother (who is sick) continues plucking from the fruits of Jannah from the time he sets out until he returns.”