Yahya related to me from Malik that he had heard from Jabir ibnAbdullah that the Messenger of Allah, may Allah bless him and granthim peace, said, "When a man visits an invalid, he plunges into mercyto the extent that when he sits with him, it settles in him," or thelike of that.
USC-MSA web (English) reference: Book 50, Hadith 17
Arabic reference: Book 50, Hadith 1731