Morotomo ni iza to wa iwade shide no yama ikade ka hitori koen to wa seshi - Gosen Wakashu(English Translation & Meaning)

もろともにいざとは言はで死出の山
いかでか一人越えんとはせし

Roma-ji: Morotomo ni iza to wa iwade shide no yama ikade ka hitori koen to wa seshi
English Translation: Not saying to me,
"Come, let us go together,"
the mountain of death—
how could you have meant to cross
its slopes all on your own
Meaning: Without once saying, "Come, let us go together," how could you have meant to cross the Mountain of Death all alone?
Commentary: Book Seventeen Miscellaneous Poems III 1248

Headnote: "When someone sent word that he had long been ill and had come very near to death."
The poet asks how the other could have meant to cross the Mountain of Death alone without saying "Come, together." Reproaching one who wrote that a long illness had nearly killed him for thinking to go alone and leave her, she conveys both deep affection and relief.
According to the headnote, someone sent word that he had long been ill and had nearly died, and she composed this.
The poet, Kan'in no Ōkimi, was a lady-in-waiting poet said to have been a daughter of Minamoto no Muneyuki, and was also called Kan'in no Go.

The first line, "Morotomo ni," means "together."
The second line, "iza to wa iwade," means "without saying 'come.'"
The third line, "shide no yama," means "the Mountain of Death" that the dead are said to cross.
The fourth line, "ikade ka hitori," means "how could you, alone," with the interrogative binding particle "ka."
The last line, "koen to wa seshi," means "have meant to cross," closing the "ka" with the attributive "seshi."
Author: Eldest Daughter of Kan'in
Source: Gosen Wakashu
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