Itsuwari ni nari zo shinubeki tsukikage o kono miru bakari hito ni kataraba - Kinyo Wakashu(English Translation & Meaning)

偽りになりぞしぬべき月影を
この見るばかり人に語らば

Roma-ji: Itsuwari ni nari zo shinubeki tsukikage o kono miru bakari hito ni kataraba
English Translation: It would surely seem
nothing but a falsehood,
this light of the moon,
if I told it to others
just as I am seeing it
Meaning: It would surely sound like a lie if I described this moonlight to others exactly as I see it now.
Commentary: Book Three Autumn Poems 178

Were the poet to tell others of the moonlight just as he sees it now, it is so beautiful that they would think it a lie. The poem conveys a beauty beyond words through the paradox that telling it truly would make it false.
From poem 174 through poem 217 in this book a long sequence of moon poems follows, from the evening moon through the bright moon of the fifteenth night of the Eighth Month to the moon at dawn, singing of the moon in all its aspects and of the heart that gazes on it.

First line, 'itsuwari ni', means into a falsehood.
Second line, 'nari zo shinubeki', means it would surely become, the particle zo binding with the attributive beki. The poem breaks after the second line and the lower half is inverted.
Third line, 'tsukikage o', is the light of the moon.
Fourth line, 'kono miru bakari', means just as I see it, the beauty exactly as seen.
Final line, 'hito ni kataraba', means if I told it to others, ba after the irrealis form giving a supposition.
Source: Kinyo Wakashu
Prev Poem: Morotomo ni kusaba no tsuyu no okiizu wa hitori ya mimashi aki no yo no tsuki
Next Poem: Ware koso wa akashi no seto ni tabine seme onaji mizu ni mo yadoru tsuki kana