The Messenger of Allah ﷺ was asked, "Which speech is best?"He replied, "That which Allah has chosen for His angels," or he said, "for His servants, Subhan Allah wa bihamdih."
إن رسول الله ﷺ سئل: أي الكلام أفضل؟ قال: ما اصطفى الله لملائكته أو لعباده: سبحان الله وبحمده.
Muslim narrated it in the Book of Remembrance (2731), from Zuhayr bin Harb, who said, Habban bin Hilal narrated to us, who said, Wahib narrated to us, who said, Saeed Jariri narrated to us, from Abu Abdullah Jusri, from Ibn Samit, from Abu Dharr, and he mentioned it.