قَالَ النَّبِيُّ صلى الله عليه وسلم: ((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)).
Translation
(Ali Ibn Abee Talib related that he heard the Messenger of Allah say: ‘If a man calls on his sick Muslim brother, it is as if he walks reaping the fruits of Paradise until he sits, and when he sits he is showered in mercy, and if this was in the morning, seventy thousand angles send prayers upon him until the evening, and if this was in the evening, seventy thousand angles send prayers upon him until the morning.)
Source
Hisnul Muslim (Fortress of the Muslim), No. 149 — chapter “The reward for visiting the sick”. hisnmuslim.com
Related Duas
Invocations for visiting the sick
Supplication 1 of 2
((لاَ بأْسَ طَهُورٌ إِنْ شَاءَ اللَّهُ)).
(Never mind, may it (the sickness) be a purification, if Allah wills.)
Hisnul Muslim · No. 147
Invocations of the terminal ill
Supplication 1 of 3
((اللَّهُمَّ اغْفِرْ لِي، وَارْحَمْنِي، وَأَلْحِقْنِي بِالرَّفِيقِ الْأَعْلَى)).
‘O Allaah, forgive me, have mercy upon me and unite me with the highest companions
Hisnul Muslim · No. 150
((ضَعْ يَدَكَ عَلَى الَّذِي تَألَّمَ مِنْ جَسَدِكَ وَقُلْ: بِسْمِ اللَّهِ، ثَلاَثاً، وَقُلْ سَبْعَ مَرَّاتٍ: أَعُوذُ بِاللَّهِ وَقُدْرَتِهِ مِنْ شَرِّ مَا أَجِدُ وَأُحَاذِرُ)).
(Place your hand at the site of the pain and say: (In the name of Allah(three times)) the supplicate seven times: (I take refuge in Allah and within His omnipotence from the evil that I feel and am wary of.))
Hisnul Muslim · No. 243