classic waka stream

たつた河もみぢば流る神なびの
みむろの山に時雨降るらし
Roma-ji

Tatsutagawa momijiba nagaru Kannabi no
Mimuro no yama ni shigure fururashi

English Translation
on Tatsuta River
maple leaves drift with the flow—
in the sacred hills
of Mimuro, high among the gods,
showers must be falling now
Meaning
Maple leaves drift along the Tatsuta River—surely in the sacred Mimuro mountains upstream, the autumn showers are falling.
Commentary
Book Five Autumn Poems (Part Two)

A note records that the first two lines are also given as “On Asuka River, maple leaves drift.”

At the time, it was believed that passing showers (shigure) caused the trees to redden and their leaves to fall.

“Kaminabi” refers to a place where a deity resides, and “Mimuro” signifies a sacred dwelling, either of a noble person or of a god. “Mount Mimuro” here likely refers not to a specific mountain but to a sacred, divine mountain in general.
Author
Unknown Poet
Source
Kokin Wakashu
Other