‏القدر : Hadeeth No:6394 This hadith has been narrated on the authority of 'Abdullah b. Mas'ud through another chain of transmitters....

‏الصيام : Hadeeth No:2627 Abu Sa'id al-Khudri (Allaah be pleased with him) reported that the Messenger of Allaah (sallAllaahu alayhi wa sallam) observed i'tikaf (confined himself for devotion and prayer) in the first ten (days) of Ramadan; he then observed i'tikaf in the middle ten (days) in a Turkish tent with a mat hanging...