The Prophet (peace and blessings be upon him) said, “On the Day of Judgement, God will say to a person, “O son of Adam, I was sick and you did not visit Me.”

The man would exclaim, “O Lord, how could I have visited You? You are the Lord of the Worlds.”

God will reply, “You knew that so and so servant of Mine was sick, but you did not visit him. Had you visited him, you would have found Me with him.”