If a man visits a patient in the evening, seventy thousand angels come along with him seeking forgiveness from Allah for him till the morning, and he will have a garden in the Paradise.  

مَا مِنْ رَجُلٍ يَعُودُ مَرِيضًا مُمْسِيًا إِلاَّ خَرَجَ مَعَهُ سَبْعُونَ أَلْفَ مَلَكٍ يَسْتَغْفِرُونَ لَهُ حَتَّى يُصْبِحَ وَكَانَ لَهُ خَرِيفٌ فِي الْجَنَّةِ وَمَنْ أَتَاهُ مُصْبِحًا خَرَجَ مَعَهُ سَبْعُونَ أَلْفَ مَلَكٍ يَسْتَغْفِرُونَ لَهُ حَتَّى يُمْسِيَ وَكَانَ لَهُ خَرِيفٌ فِي الْجَنَّةِ  

His father said: "Ali took me by the hand and said: 'Come with us to pay a visit to Al-Hasan.' So we found that Abu Musa was with him.' Ali - peace be upon him - said: 'O Abu Musa! Did you come to visit (the sick) or merely (stop by to) visit?' He said: 'No, to visit (the sick).' So Ali said: 'I heard the Messenger of Allah saying: "No Muslim visits (the sick) Muslims in the morning, except that sevety-thousand angels, sent Salat upon him until the evening, and he does not visit at night except that seventy thousand angels sent Salat upon him until the morning, and there will be a garden for him in Paradise."  

انْطَلِقْ بِنَا إِلَى الْحَسَنِ نَعُودُهُ فَوَجَدْنَا عِنْدَهُ أَبَا مُوسَى فَقَالَ عَلِيٌّ عَلَيْهِ السَّلاَمُ أَعَائِدًا جِئْتَ يَا أَبَا مُوسَى أَمْ زَائِرًا فَقَالَ لاَ بَلْ عَائِدًا فَقَالَ عَلِيٌّ سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ مَا مِنْ مُسْلِمٍ يَعُودُ مُسْلِمًا غُدْوَةً إِلاَّ صَلَّى عَلَيْهِ سَبْعُونَ أَلْفَ مَلَكٍ حَتَّى يُمْسِيَ وَإِنْ عَادَهُ عَشِيَّةً إِلاَّ صَلَّى عَلَيْهِ سَبْعُونَ أَلْفَ مَلَكٍ حَتَّى يُصْبِحَ وَكَانَ لَهُ خَرِيفٌ فِي الْجَنَّةِ  

Abu Moosa al-Ash’ari visited al-Hasan bin ʿAli bin Abi Talib ؓ when he was sick. ʿAli ؓ said to him: Have you come to visit him because he is sick or is it a social visit? He said: No, rather I have come to visit him because he is sick, ‘Ali ؓ said: There is no Muslim who visits a sick person, but seventy thousand angels go out with him, all of them praying for forgiveness for him. If he went out in the morning [they continued to do that] until evening comes, and he will have a garden in Paradise. If he goes out in the evening, seventy thousand angels go out with him, all of them praying for forgiveness for him until morning comes, and he will have a garden in Paradise.”  

لَهُ عَلِيٌّ أَعَائِدًا جِئْتَ أَمْ زَائِرًا؟ قَالَ لَا بَلْ جِئْتُ عَائِدًا قَالَ عَلِيٌّ أَمَا إِنَّهُ مَا مِنْ مُسْلِمٍ يَعُودُ مَرِيضًا إِلا خَرَجَ مَعَهُ سَبْعُونَ أَلْفَ مَلَكٍ كُلُّهُمْ يَسْتَغْفِرُ لَهُ إِنْ كَانَ مُصْبِحًا حَتَّى يُمْسِيَ وَكَانَ لَهُ خَرِيفٌ فِي الْجَنَّةِ وَإِنْ كَانَ مُمْسِيًا خَرَجَ مَعَهُ سَبْعُونَ أَلْفَ مَلَكٍ كُلُّهُمْ يَسْتَغْفِرُ لَهُ حَتَّى يُصْبِحَ وَكَانَ لَهُ خَرِيفٌ فِي الْجَنَّةِ  

"عَنْ الْحَكَمِ بْنِ عَبْدِ الله بْنِ نَافِعٍ قَالَ: عَادَ أَبُو مُوسَى الْحَسَنَ بْنَ عَلِىٍّ، فَقَالَ عَلِىٌّ: أَمَا إِنَّهُ، مَا مِنْ مُسْلِمٍ يَعُودُ مَرِيضًا إِلَّا خَرَجَ مَعَهُ سَبْعُونَ أَلْفَ مَلَكٍ يَسْتَغْفِرُونَ لَهُ إِنْ كَانَ مُصْبِحًا حَتَّى يُمْسِىَ، وَكَانَ لَهُ خَرِيفٌ فِي الْجنَّةِ وَإِنْ كان مُمْسِيًا خَرَجَ مَعَه سَبْعُونَ أَلْفَ مَلَكٍ كُلُّهُمْ يَسْتَغْفِرُونَ لَهُ وَكَانَ لَهُ خَرِيفٌ فِي الْجَنَّةِ".