The day of Ashura: which day it is

Al-Hakam bin al-A'raj said: I came to Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) while he was lying with his cloak as a pillow at Zamzam. I said: "Tell me about the fast of Ashura." He said: "When you see the new moon of Muharram, count the days, then fast on the ninth." I said: "Is this how the Prophet (peace and blessings be upon him) used to fast it?" He said: "Yes."

It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "If I remain alive until next year, I will fast the ninth of Muharram," meaning the day of Ashura.

Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: The day of Ashura is the night of the tenth and the morning of the ninth.

Al-Dahhak said: The day of Ashura is the ninth of Muharram.

Al-Hasan and Muhammad said: The day of Ashura is the tenth of Muharram.

Sa'id bin al-Musayyib, al-Hasan and Ikrimah said: The day of Ashura is the tenth of Muharram.

Al-Hasan said: The day of Ashura is the tenth of Muharram.

Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: The day of Ashura is the ninth of Muharram.

Shu'bah said: Sayyiduna Ibn Abbas (may Allah be pleased with them both) used to fast on the day of Ashura even while travelling, and he would fast two consecutive days, so that the fast of the day of Ashura would not be missed.

Al-Hasan said: The day of Ashura is the tenth of Muharram.