‏الصيام : Hadeeth No:2501 'A'isha (Allaah be pleased with her) reported. In the pre-Islamic days fast was observed on the day of Ashura, but with the advent of Islam (its position was ascertained as that of a voluntary fast). Then he who wished to fast fasted, and he who liked to abandon it abandoned it....

‏الحج : Hadeeth No:2745 This hadith has been narrated on the authority of Zaid b. Aslam with the same chain of transmitters that Abu Ayyub rubbed his whole head with his hands and then moved them forward and backward. Miswar said to Ibn 'Abbas: I would never dispute with you (in future)....