Izuku ni ka tsuki wa hikari o todomu ran yadorishi mizu mo kōri inikeri - Senzai Wakashu(English Translation & Meaning)

いづくにか月は光をとどむらん
宿りし水も氷ゐにけり

Roma-ji: Izuku ni ka tsuki wa hikari o todomu ran yadorishi mizu mo kōri inikeri
English Translation: Where now, I wonder,
does the moon let its light
rest and linger?
For the waters where it dwelt
have frozen into ice
Meaning: Where, I wonder, does the moon let its light rest now? Even the water where it used to dwell has frozen over.
Commentary: Book Six Winter Poems 439

Headnote: "Composed as a poem on ice"
Composed as a poem on ice. Where, the poet asks, does the moon let its light rest now, when even the water where it used to dwell has frozen over? Taking the moon's part, he worries over it as having lost its dwelling now that ice has sealed the surface where it was reflected.
The author, "Sadaiben Chikamune," is Taira no Chikamune, son of Taira no Tokinobu and younger brother of Kenshunmon'in Shigeko, consort of Retired Emperor Go-Shirakawa. He later rose to Middle Counselor.
The three poems from 439 to 441 are poems on ice placed under the same headnote. Where the preceding poem, 438, sings of the moon dwelling even beneath the ice, this poem sings of a moon that has lost its dwelling because of the ice, a reversed composition.

First line, "izuku ni ka": "izuku" means "where," and the interrogative "ka" closes with the attributive "ran" in the second line.
Second line, "tsuki wa hikari o": "the moon its light."
Third line, "todomu ran": "todomu" is to keep or let rest, and "ran" is the present conjecture. The poem pauses here.
Fourth line, "yadorishi mizu mo": "yadoru" is for moonlight to be reflected in water, and "shi" is the attributive of the past "ki," taking up the "yadoru tsuki" of the preceding poem, 438.
Fifth line, "kōri inikeri": "kōri iru" is for ice to form, and "keri" expresses realization. It is the same turn of phrase as "tsurara inikeri" in 434 of this book.
Author: Taira no Chikamune
Source: Senzai Wakashu
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