‏الصلاة : Hadeeth No:1918 Nafi' reported that when 'Abdullah (b. 'Umar) observed the Friday prayer and came back he observed two rak'ahs in his house, and then said: The Messenger of Allaah (sallAllaahu alayhi wa sallam) used to do this....

‏الصيام : Hadeeth No:2536 Abu Sa'id al-Khudri (Allaah be pleased with him) reported that the Messenger of Allaah (sallAllaahu alayhi wa sallam) forbade to observe fast on two days the day of Fitr and the day of Sacrifice ('Id-ul-Adha)....