In the first year of Belshazzar king of Babylon Daniel had a dream and visions of his head upon his bed: then he wrote the dream, [and] told the sum of the matters.
Berean Study Bible (BSB) - Daniel 7:1 >In the first year of the reign of Belshazzar over Babylon, Daniel had a dream, and visions passed through his mind as he lay on his bed. He wrote down the dream, and this is the summary of his account.