Sayyiduna Ibn Mas'ud (may Allah be pleased with him) said, regarding the saying of Allah Almighty: "By those lined up in rows" [Surah al-Saffat: 1]: "This refers to the angels." "And those who drive (the clouds)" [Surah al-Saffat: 2]: "This refers to the angels." "And those who recite the remembrance" [Surah al-Saffat: 3]: "This refers to the angels."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 9009