(19) باب صَوْمِ يَوْمِ عَاشُورَاءَ
Abdullah b. Umar (Allah be pleased with them) reported that the day of 'Ashura was mentioned before the Messenger of Allah (ﷺ) and he narrated a hadith like one (narrated above).
Reference: Sahih Muslim 1126 e
In-book reference: Book 13, Hadith 152
USC-MSA web (English) reference(deprecated numbering scheme): Book 6, Hadith 2508