Hazrat Aswad says that I did not see either Hazrat Ali (may Allah be pleased with him) bin Abi Talib or Hazrat Abu Musa commanding the fast of Ashura.

Hazrat Harith narrates that Hazrat Ali (may Allah be pleased with him) used to order the observance of fasting on the day of Ashura.

Hazrat Abu Bakr bin Abdur Rahman bin Harith narrates that Hazrat Umar sent a message to Abdur Rahman bin Harith on the night of Ashura and said, "Eat suhoor." Then the next day, Hazrat Umar also fasted and Hazrat Abdur Rahman also fasted.

Hazrat Qasim used to fast on the day of Ashura.

Hazrat Qais bin Sa'd narrates that the Noble Prophet (peace and blessings be upon him) commanded us to fast on the day of Ashura.

Hazrat Qasim says that when the fasting of Ramadan was made obligatory, the Prophet (peace and blessings be upon him) neither ordered us to fast on Ashura nor forbade us from it; we used to observe this fast.

Hazrat Muhammad states that the Noble Prophet, peace and blessings be upon him, said to a man from the tribe of Aslam on the day of Ashura: "Go to your people and command them to fast today." That man said, "I think that when I reach them, they will have already had breakfast." The Prophet, peace and blessings be upon him, said, "Whoever has already had breakfast, tell him not to eat for the rest of the day, and whoever has not had breakfast, tell him to fast."

Hazrat Saeed bin Jubair narrates that the Holy Prophet (peace and blessings be upon him) instructed the people to fast on the day of Ashura.

Hasan liked the fasting of the Day of Ashura.

Hazrat Qais bin Sakan narrates that Hazrat Ash'ath came to Hazrat Abdullah on the day of Ashura. Hazrat Abdullah was eating food. He invited Hazrat Ash'ath to eat, but he said, "I am fasting." Hazrat Abdullah said, "This fast used to be observed before the fasting of Ramadan was made obligatory."