It is narrated from Hazrat Anas bin Malik (may Allah be pleased with him) that once the Prophet (peace and blessings be upon him) went to visit a man from Banu Najjar who was ill, and said to him, "Uncle! Affirm that there is no god but Allah." He said, "Uncle or paternal uncle?" The Prophet (peace and blessings be upon him) replied, "No, uncle! Say there is no god but Allah." He asked, "Is this better for me?" The Prophet (peace and blessings be upon him) said, "Yes."