Waga yue ni omoi na yase so akikaze no fukamu sono tsuki awamu mono yue

我がゆゑに思ひな痩せそ秋風の
吹かむその月逢はむものゆゑ

Roma-ji: Waga yue ni omoi na yase so akikaze no fukamu sono tsuki awamu mono yue
English Translation: Because of me
do not pine away with longing;
in the very month
when the autumn wind blows
we are sure to meet again
Meaning: Do not waste away with longing for my sake; in the month when the autumn wind blows, we shall surely meet again.
Commentary: Book Fifteen Poems of the Envoys to Silla 3586

Headnote continued from the preceding poem: "The envoys sent to Silla grieve at parting and exchange poems, express their sorrowful feelings on the sea route, and recite old poems suited to the places they pass"
The husband shows concern for his wife, telling her not to waste away thinking of him. He comforts her by pointing to the planned return: in the month when the autumn wind blows, they will meet again. Like 3581, it pledges reunion in autumn, but the embassy's return slipped into the following year. The opening "waga yue ni" also appears at the start of 3615, where on his journey he imagines his wife's sighs, so that the poems of departure and of the voyage answer each other.
The first half of this book gathers the poems of the embassy sent to Silla in the eighth year of Tenpyō (736), arranged in the order of the journey from the departure at Naniwa to the return. A left note reads "the above eleven poems are an exchange," and these opening eleven poems are the parting exchanges between the envoys and their wives before departure. None of the authors is named.

First line, "waga yue ni": "yue" means for the sake of, because of: because of me. It echoes "mono yue" at the end, so that the word "yue" frames the poem.
Second line, "omoi na yase so": "na ... so" expresses prohibition: do not pine and grow thin. The poem breaks after this second line.
Third line, "akikaze no": the autumn wind, a sign of the season's arrival, marks the time of the planned return.
Fourth line, "fukamu sono tsuki": "mu" is the attributive of the auxiliary of conjecture: in that month when the autumn wind will blow.
Fifth line, "awamu mono yue": "mono yue" is here causal: since we shall meet, giving the reason for the prohibition in the second line.
Source: Manyoshu
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