(20) باب أَىُّ يَوْمٍ يُصَامُ فِي عَاشُورَاءَ
Hakam b. 'Araj reported:
I asked Ibn Abbas (Allah be pleased with them) as he was reclining using his cloak as a pillow near Zamzam about fasting on 'Ashura. The rest of the hadith is the same. (ID)
Reference (ID): Sahih Muslim 1133 b (ID)
In-book reference (ID): Book 13, Hadith 171 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Book 6, Hadith 2527 (ID)