Musnad Ahmad 612
It was narrated that ‘AbdurRahman bin Abi Laila said:
Abu Moosa came to al-Hasan bin `Ali to visit him when he was sick. `Ali (رضي الله عنه) said: Have you come to visit him or to gloat? He said: No. I have come to visit him because he is sick. `Ali (رضي الله عنه) said to him: Since you have come to visit him because he is sick, I heard the Messenger of Allah (ﷺ) say: “If a man visits his Muslim brother when he is sick, he is walking amongst the fruits of Paradise until he sits down, and when he sits down he is covered with mercy. If it is morning, seventy thousand angels will send blessings upon him until evening, and if it is evening, seventy thousand angels will send blessings upon him until morning.`
حَدَّثَنَا أَبُو مُعَاوِيَةَ، حَدَّثَنَا الْأَعْمَشُ، عَنِ الْحَكَمِ بْنِ عُتَيْبَةَ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي لَيْلَى، قَالَ جَاءَ أَبُو مُوسَى إِلَى الْحَسَنِ بْنِ عَلِيٍّ يَعُودُهُ فَقَالَ لَهُ عَلِيٌّ رَضِيَ اللَّهُ عَنْهُ أَعَائِدًا جِئْتَ أَمْ شَامِتًا قَالَ لَا بَلْ عَائِدًا قَالَ فَقَالَ لَهُ عَلِيٌّ رَضِيَ اللَّهُ عَنْهُ إِنْ كُنْتَ جِئْتَ عَائِدًا فَإِنِّي سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ إِذَا عَادَ الرَّجُلُ أَخَاهُ الْمُسْلِمَ مَشَى فِي خِرَافَةِ الْجَنَّةِ حَتَّى يَجْلِسَ فَإِذَا جَلَسَ غَمَرَتْهُ الرَّحْمَةُ فَإِنْ كَانَ غُدْوَةً صَلَّى عَلَيْهِ سَبْعُونَ أَلْفَ مَلَكٍ حَتَّى يُمْسِيَ وَإِنْ كَانَ مَسَاءً صَلَّى عَلَيْهِ سَبْعُونَ أَلْفَ مَلَكٍ حَتَّى يُصْبِحَ‏.‏