From Sahih Muslim (Hadith 447):
Abu Musa reported:The Messenger of Allah (ﷺ) was standing amongst us and (he said) four (things): Verily Allah does not sleep and it does not befit Him to sleep. He raises the scale and lowers it. The deeds of the day are presented to Him in the night and the deeds of the night in the day
Reference: Muslim 447