Abdul Rahman bin Yazid said: When al-Ash'ath bin Qais entered the house of 'Abdullah he was having his breakfast. He ('Abdullah bin 'Umar (RA) said: Abu Muhammad (al-Asha'th), came near to the breakfast. Thereupon he said: Is not today the Day of 'Ashura? He ('Abdul Rahman) said: Do you know what the Day of 'Ashura is? He said: What is it? He said: It is a day on which the Messenger of Allah ( صلی اللہ علیہ وسلم ) used To observe fast before the (fasting) in the month of Ramadan became obligatory. But when it became obligatory the (fasting of 'Ashura) was abandoned (as compulsory). Abu Kuraib said: He (the Holy Prophet ( صلی اللہ علیہ وسلم ) abandoned it.

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 abandoned it (the practice of observing fast on Ashura).

Qais b. Sakan reported that al-Ash'ath bin Qais went to 'Abdullah on the day of 'Ashura while he was eating. He said: Abu Muhammad, come near and dine. Upon this he said: I am fasting. Thereupon he said: We used to observe fast and then (this practice) was abandoned.

'Alqama reported that Ash'ath bin Qais went to Ibn Mas'udd while he was eating on the day of Ashura. Thereupon he said: Abu Abdul Rahman, it is the day of 'Ashura (and you are eating). Upon this he said: Fast was observed on (this day) before the (fasting) in Ramadan was made obligatory, but when it was made obligatory, (fasting on the day of 'Ashura) was abandoned. So if you are not fasting, then take food.