Hakam bin A'raj narrates that I asked Sayyiduna Ibn Abbas (may Allah be pleased with them both) while he was sitting in the Sacred Mosque, reclining on his cloak. I asked him about the fasting of Ashura. He said: "Keep counting, and when you reach the morning of the ninth of Muharram, then fast." He says: I asked, "Did Muhammad (peace be upon him) used to fast like this?" He replied, "He used to fast like this."