It wasnarrated that 'Ali said:
"I heard the Messenger of Allah (ﷺ)say: 'Whoever comes to his Muslim brother and visits him (when heissick), he is walking among the harvest of Paradise until he sitsdown,and when he sits down he is covered with mercy. If it ismorning,seventy thousand angels will send blessing upon him untilevening, andif it is evening, seventy thousand angels will sendblessing upon himuntil morning.'"
English reference: Vol. 1, Book 6, Hadith 1442
Arabic reference: Book 6, Hadith 1509