´Abu Hurairah narrated that :` the Messenger of Allah (ﷺ) said: “Whoever says: ‘Glory is to Allah, and with His Praise (Subḥān Allāh, wa biḥamdih)’ a hundred times, his sins are forgiven, even if they were like the foam of the sea.”
Hadith ReferenceSunan at-Tirmidhi / Chapters on Supplication / Hadith: 3466