Kotosara ni koromo wa suraji ominaeshi sakino no hagi ni nioite oramu

ことさらに衣は摺らじをみなへし
佐紀野の萩ににほひて居らむ

Roma-ji: Kotosara ni koromo wa suraji ominaeshi sakino no hagi ni nioite oramu
English Translation: Purposely, not I—
I'll not rub my robe with dye;
maiden-flower land,
in Saki fields' bush clover
I'll stay, steeped in its color.
Meaning: I will not trouble to rub-dye my robe—I will simply stay among the bush clover of Saki Plain and let its color steep into me.
Commentary: Book Ten Autumn Miscellaneous Poems 2107

Headnote continued from the preceding poem: "On Flowers"
This poem says there is no need to rub-dye one's robe, for staying amid the bush clover of Saki Plain will dye it naturally. It shares the device of 2101, where the bush clover dyed the robe, showing the joy of placing oneself in fields full of bush clover. Like 1905 in the spring love poems, it uses the pillow word "ominaeshi" for Saki.

The first line, "kotosara ni," means purposely.
In the second line, "koromo wa suraji," "ji" expresses negative intention: I will not dye my robe. The poem breaks here.
The third line, "ominaeshi," is a pillow word attached to "Saki."
In the fourth line, "in the bush clover of Saki Plain," Saki Plain lies north of the Heijō capital.
In the last line, "nioite oramu," "niou" means to be steeped in color and "mu" expresses intention, closing with the wish to stay dyed by the clover.
Source: Manyoshu
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