153 12658 Sahih Muslim 14 2705 The Book of Fasting - كتاب الصيام "30022 30203 20028" وحدثنا زهير بن حرب، وعثمان بن أبي شيبة، قالا حدثنا جرير، عن الأعمش، بهذا الإسناد وقالا فلما نزل رمضان تركه . " This hadith has been narrated from Jarir on the authority of A'mash with the same chain of transmitters and he said (these words with a little bit of variation from the previous hadith): When (fasting) in Ramadan was (made) obligatory he aban- doned it (the practice of observing fast on Ashura)."