Sahih Muslim The Book of Virtue, Enjoining Good Manners, and Joining of the Ties of Kinship Umm al-Darda'a أم الدرداء Sahih I heard Allah’s Messenger (ﷺ) as saying: The invoker of curse would neither be witness nor intercessor on the Day of Resurrection. https://parallelquran.com/hadith/sahih-muslim-6450/ Sahih Muslim The Book Pertaining to the Remembrance of Allah, Supplication, Repentance and Seeking Forgiveness Umm al-Darda'a أم الدرداء Sahih My husband reported that he heard Allah’s Mes- senger (ﷺ) 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. https://parallelquran.com/hadith/sahih-muslim-6759/