‏الذكر والدعاء والتوبة والاستغفار‏ : Hadeeth No:6588 Abu Dharr reported that Allaah's Messenger (sallAllaahu alayhi wa sallam) said: There is no believing servant who supplicates for his brother behind his back (in his absence) that the Angels do not say: The same be for you too....

‏الصيام : Hadeeth No:2623 'Ibn 'Umar (Allaah be pleased with both of them) reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: Seek the time of Lailat-ul-Qadr in the last (ten nights), or he said: in the last nine (nights)....