Imo ga kado ideiri no kawa no se o hayami aga uma tsumazuku ie mou rashi mo

妹が門出入の川の瀬を早み
我が馬つまづく家思ふらしも

Roma-ji: Imo ga kado ideiri no kawa no se o hayami aga uma tsumazuku ie mou rashi mo
English Translation: At my darling's gate
in and out—the Ideiri
runs so swift
my horse stumbles in its stream:
they must be thinking of me at home
Meaning: The shallows of the Ideiri River—named for going in and out of my love's gate—run so swift that my horse stumbles; someone at home must be thinking of me.
Commentary: Book Seven Miscellaneous Poems 1191

Headnote continued from the preceding poem: "Composed on Journeys"
When his horse stumbles in the swift Ideiri River, the poet takes it as a sign that someone at home is thinking of him. Behind the poem lies the folk belief that a horse's stumble signals the thoughts of family at home, and it is filled with longing for home.
The first line, "At my darling's gate," leads to "the Ideiri River" through the idea of going in and out of the gate. The next poem also takes a horse's faltering as a sign of longing at home, so the two stand side by side with the same idea. The poet is unknown.

The first line, "At my darling's gate," leads to "Ideiri" (going in and out).
The second line names the Ideiri River, whose location is uncertain; the line has an extra syllable.
The third line, "runs so swift," is a "-mi" form of cause, the same as in poems 1108 and 1109 in this book.
The fourth line, "my horse stumbles," pauses the poem and has an extra syllable.
The final line, "they must be thinking of me at home," rests on the belief that a stumbling horse means someone at home is thinking of the rider. It corresponds to the last line of the next poem, "they must be longing for me at home."
Source: Manyoshu
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