What did the Prophet Muhammad (peace be upon him) do on the days of `Id al Adha and `Id-al-Fitr?
 Narrated `Abdullah bin `Umar:                     that he was asked about a man who had vowed that he would fast all the days of his life then the day of `Id al Adha or `Id-al-Fitr came. `Abdullah bin `Umar said: You have indeed a good example in Allah's Apostle. He did not fast on the day of `Id al Adha or the day of `Id-al-Fitr, and we do not intend fasting on these two days.