אַ֣נְתְּה מַלְכָּ֗א רַעְיוֹנָךְ֙ עַל־מִשְׁכְּבָ֣ךְ סְלִ֔קוּ מָ֛ה דִּ֥י לֶהֱוֵ֖א אַחֲרֵ֣י דְנָ֑ה וְגָלֵ֧א רָזַיָּ֛א הוֹדְעָ֖ךְ מָה־דִ֥י לֶהֱוֵֽא׃
as for thee, O king, thy thoughts came [into thy mind] upon thy bed, what should come to pass hereafter; and He that revealeth secrets hath made known to thee what shall come to pass.
Rashi on Daniel
came while on your bed What you were thinking of during the day, what would be after you, came [to you] on your bed.
Rashi on Daniel
and the Revealer of secrets and the Holy One, blessed be He, Who reveals secrets, let you know what will come about.