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
This hadith has been narrated by Ibn Bishr with the same chain of transmitters (but with a slight variation) that he (the Holy Prophet) inquired of them (Jews) about it (fasting on the day of 'Ashura).
Reference: Sahih Muslim 1130 b In-book : Book 13, Hadith 163 USC-MSA web (English) : Book 6, Hadith 2519 (deprecated)
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