From Sahih Bukhari (Hadith 7413):
Narrated Ibn `Umar:Allah's Messenger (ﷺ) said, "On the Day of Resurrection, Allah will grasp the whole Earth by His Hand, and all the Heavens in His right, and then He will say, 'I am the King." Abu Huraira said, "Allah's Messenger (ﷺ) said," Allah will grasp the Earth
Reference: Bukhari 7413