عَنْ أَبِي هُرَيرَةَ رَضِيَ اللهُ عَنهُ قَالَ قَالَ رَسُولُ اللهِ صَلَّى اللهُ عَلَيهِ وَسَلَّمَ : مَنْ عَادَ مَرِيضًا نَادَى مُنَادٍ فِي السَّمَاءِ : طِبْتَ وَطَابَ مَمْشَاكَ وَتَبَوَّأْتَ مِنَ الْجَنَّةِ مَنْزِلاً . (ابن ماجه ص104)
Hadhrat Abu Hurayrah (Radhiyallahu Anhu) reports that Rasulullah (Sallallahu Alaihi Wasallam) said: Whosoever visits a sick person, an angel calls out from the sky: “May you remain in ease and comfort. How excellent is your walking (to meet your brother and show concern for him) and (through this action) you have built (for yourself) a palace in Jannah.”