Abu Sa'id reported God’s messenger as saying, "When you go in to visit an invalid, express a hope that he will live long. That will not avert anything, but it will comfort him.”
Tirmidhl and Ibn Majah transmitted it, and Tirmidhi said this is a gharib tradition.
Anas told that when a young Jew who was a servant of the Prophet became ill the Prophet went to visit him and, sitting down by his head, said to him, “Accept Islam.” He looked at his father who was beside him, and he said, "Obey Abul Qasim.” So he accepted Islam, and the Prophet went out saying, "Praise be to God who has saved him from hell.”
‘Amir ar-Ram told that God’s messenger mentioned illnesses and said, "When a believer is afflicted by illness and God who is great and glorious cures him of it, it serves as an atonement for his previous sins and a warning to him for the future; but when a hypocrite becomes ill and then is cured he is like a camel which has been tethered and then let loose by its owners, but does not know why they tethered it and why they let it loose.” When a man asked God’s messenger what illnesses were, adding that he swore by God he had never been ill, he said, "Get up and leave us ; you do not belong to our number.”
