عن ثوير هو ابن أبي فاختة عن أبيه قال أخذ علي بيدي قال انطلق بنا إلى الحسن نعوده فوجدنا عنده أبا موسى فقال علي أعائدا جئت يا أبا موسى أم زائرا فقال لا بل عائدا فقال علي سمعت رسول الله صلى الله عليه وسلم يقول ما من مسلم يعود مسلما غدوة إلا صلى عليه سبعون ألف ملك حتى يمسي وإن عاده عشية إلا صلى عليه سبعون ألف ملك حتى يصبح وكان له خريف في الجنة (سنن الترمذي #969)

Thuwair, the son of Abu Faakhtah (rahimahullah), narrates that Abu Faakhtah (rahimahullah) said, “Hazrat ‘Ali (radhiyallahu ‘anhu) once held my hand and said, ‘Come with us to Hasan (radhiyallahu ‘anhu) so that we may visit him in his illness.’ Then (on arriving at Hasan (radhiyallahu ‘anhu),) we found Hazrat Abu Musa (radhiyallahu ‘anhu) present with him. (Seeing him,) Hazrat ‘Ali (radhiyallahu ‘anhu) asked, ‘O Abu Musa (radhiyallahu ‘anhu)! (What is your intention for coming to visit him?) Have you come to visit him on account of his sickness, or are you visiting him (for some other purpose)?’ Hazrat Abu Musa (radhiyallahu ‘anhu) replied, ‘No (i.e. I am not visiting him for some other purpose). Rather, I am visiting him on account of his sickness.’ Hazrat ‘Ali (radhiyallahu ‘anhu) thus said, ‘I heard Rasulullah (sallallahu ‘alaihi wasallam) mentioning, ‘There is no Muslim who visits another Muslim who is sick, in the morning, except that seventy thousand Angels make du‘aa for him until the evening. And he does not visit a sick Muslim in the evening, except that seventy thousand Angels make du‘aa for him until the morning, and he will have a garden in Jannah.’’”