The Book of Fasting (Kitab Al-Sawm)

Muslim :: Book 6 : Hadith 2519

This hadith has been narrated by Ibn Bishr with the same chain of trans- mitters (but with a slight variation) that he (the Holy Prophet) inquired of them (Jews) about it (fasting on the day of 'Ashura).

Source materials are from the University of Southern California MSA site
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