Kazu shirazu kimi ga yowai o nobaetsutsu na tataru yado no tsuyu to naranan - Gosen Wakashu(English Translation & Meaning)

数知らず君が齢を延ばへつつ
名立たる宿の露とならなん

Roma-ji: Kazu shirazu kimi ga yowai o nobaetsutsu na tataru yado no tsuyu to naranan
English Translation: Beyond all counting,
lengthening the years of your life,
may it become
the dew of this house of mine
whose name is known so well
Meaning: May this dew, lengthening your life past all counting, become the dew of this house whose name is so well known.
Commentary: Book Seven Autumn Poems III 394

Headnote: "When she lived next door, on the eighth day of the ninth month, he sent floss to put on the chrysanthemums of Ise's house, and the next morning she picked them and sent them back."
The poet wishes that the dew of these chrysanthemums, lengthening his life beyond all counting, may become the dew of this famous house. Drawing on the belief that chrysanthemum dew brings long life, it celebrates his longevity.
According to the headnote, when the two lived next door to each other, Fujiwara no Masatada sent floss to cover the chrysanthemums of Ise's house on the eighth day of the ninth month, and the next morning she picked the flowers and returned them with this poem. It reflects the custom of "kisewata," in which floss was laid over chrysanthemums on the eve of the Double Ninth festival, and wiping the body the next morning with the dew-soaked floss was thought to bring long life. It forms an exchange with the next poem.
The poet, Ise, was a daughter of Fujiwara no Tsugukage, governor of Ise, and served Fujiwara no Onshi, a consort of Emperor Uda. Favored by Emperor Uda, she bore him a son, and later had a daughter, Nakatsukasa, by Prince Atsuyoshi. She is counted among the Thirty-Six Immortal Poets, and her "Naniwagata mijikaki ashi no fushi no ma mo" is included in the Ogura Hyakunin Isshu.

The first line, "Kazu shirazu," means "beyond counting."
The second line, "kimi ga yowai o," means "your span of life."
The third line, "nobaetsutsu," means "lengthening it on and on."
The fourth line, "na tataru yado no," means "of the house of renown," referring to Ise's house known for its chrysanthemums. The second line of the next poem answers with the same words.
In the last line, "nan" is a particle of wishing: "may it become dew."
Author: Ise
Source: Gosen Wakashu
Prev Poem: Kagamiyama yama kakikumori shigururedo momiji akaku zo aki wa miekeru
Next Poem: Tsuyu dani mo na tataru yado no kiku naraba hana no aruji ya ikuyo naruran