ßÊÇÈ ÇáÕæã : Hadeeth No:1881 : 'Aisha: Allah's Apostle ordered (the Muslims) to fast on the day of 'Ashura', and when fasting in the month of Ramadan was prescribed, it became optional for one to fast on that day ('Ashura') or not....

ßÊÇÈ ÇáãÛÇÒí : Hadeeth No:3947 : Ibn Umar: We did not eat our fill except after we had conquered Khaibar....