Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) used to say: "When I narrate a hadith to you, I also bring you its confirmation from the Book of Allah. When a Muslim servant says: Alhamdulillah, Subhan Allah, La ilaha illallah, Allahu akbar and Tabarak Allah, an angel takes hold of them, places them under his wing and ascends with them. He does not pass by any gathering of angels except that they seek forgiveness for the one who said them, until he brings them before the Most Merciful, the Exalted." Then Sayyiduna Abdullah (may Allah be pleased with him) recited this verse: "To Him ascends the good word, and righteous deeds raise it" [Surah Fatir: 10].
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 9112