‏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....

‏الفضائل : Hadeeth No:5790 Jabir. Samura reported: I saw the seal on his back as if it were a pigeon's egg....