It was narrated that ‘Iyad bin "Ghutaif said:

We entered upon Abu "Ubaidah bin al-Jarrah to visit him when he was sick, and his wife Tuhaifah was sitting by his head. We said: How is Abu "Ubaidah? She said: By Allah, he is gaining reward. Abu "Ubaidah said: I am not gaining reward. He was facing the wall and he turned to face the people and said: Why don"t you ask me about what I said? They said: We did not like what you said, so we did not ask you about it. He said: I heard the Messenger of Allah (ﷺ) say: "Whoever spends wealth for the sake of Allah will be rewarded seven hundred fold, and whoever spends on himself and his family, or visits a sick person, or removes something harmful (from the road), his good deed will be rewarded tenfold. And fasting is a shield unless he makes a hole in it. If Allah tests a person with physical sickness, it is a means of forgiveness for his sins.”