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
Ibn Abbas was asked about observing of fast on the day of Ashura, whereupon he said:
I do not know Allah's Messenger (ﷺ) singling out any day's fast and considering it more excellent than another, except this day (the day of Ashura) and this month, meaning the month of Ramadan.
Reference: Sahih Muslim 1132 a In-book : Book 13, Hadith 168 USC-MSA web (English) : Book 6, Hadith 2524 (deprecated)
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