Jami' at-Tirmidhi — Hadith #26912

Hanad told us, and Abu Kurayb told us, they said, Waki` told us, on the authority of Hajib ibn Umar, on the authority of Al-Hakam ibn Al-Araj, he said, I ended up with Ibn Abbas, and he is He wrapped his robe around Zamzam, so I said, “Tell me about the day of Ashura. Which day is it that I fast?” He said, “If you see the crescent of Muharram, count it.” Then he fasted on the ninth morning. He said, “Is this how Muhammad, may God bless him and grant him peace, used to fast?” He said, “Yes.”