Encouragement to honor one's neighbor and guest, and the obligation to remain silent unless one has something good to say, and the fact that all of that is part of faith
When Allah's Messenger (ﷺ) visited the sick he would say: Lord of the people. remove the disease, cure him, for You are the great Curer, there is no cure but through Your healing Power, which leaves nothing of the disease.
Reference: Sahih Muslim 2191 c In-book : Book 39, Hadith 63 USC-MSA web (English) : Book 26, Hadith 5434 (deprecated)
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