‏الذكر والدعاء والتوبة والاستغفار‏ : Hadeeth No:6589 Umm Darda' reported: My husband reported that he heard Allaah's Mes- senger (sallAllaahu alayhi wa sallam) as saying: He who supplicates for his brother behind his back (in his absence), the Angel commissioned (for carrying supplication to his Lord) says: Amen, and it is for you also....

‏الصلاة : Hadeeth No:2060 This hadith has been narrated by another chain of transmitters except with this variation (of words) that in the hadith narrated by Ma'mar (the words are):" I do not know whether the hadith is marfu'."...