The Prophet ﷺ said, "Two words that are light on the tongue, heavy on the scale, and beloved to the Most Merciful: Subhan Allah wa bi-hamdihi, Subhan Allah al-Azim."
عن النبي ﷺ قال: كلمتان خفيفتان على اللسان، ثقيلتان في الميزان، حبيبتان إلى الرحمن، سبحان الله وبحمده سبحان الله العظيم.
Bukhari narrated it in the Book of Supplications (6406), and Muslim in the Book of Remembrance and Supplication (2694), both of them through the route of Ibn Fudayl, from Umara bin Qaqa, from Abu Zura, from Abu Hurairah, who related it.