Riyad as-Salihin, Book 16, Hadith 1408 (In-Book) ⓘ

Abu Hurairah (May Allah be pleased with him) reported: The Messenger of Allah said, "There are two statements that are light for the tongue to remember, heavy in the Scales and are dear to the Merciful: 'Subhan-Allahi wa bihamdihi, Subhan-Allahil-Azim [Glory be to Allah and His is the praise, (and) Allah, the Greatest is free from imperfection]'."[Al-Bukhari and Muslim].

وعن أبي هريرة رضي الله عنه قال‏:‏ قال رسول الله صلى الله عليه وسلم‏:‏ ‏ "‏كلمتان خفيفتان على اللسان، ثقيلتان في الميزان، حبيبتان إلى الرحمن‏:‏ سبحان الله وبحمده، سبحان الله العظيم‏" ‏ ‏(‏‏(‏متفق عليه‏)‏‏)‏‏.‏