Hito goto ni kawaru wa yume no madoi nite samureba onaji kokoro narikeri - Senzai Wakashu(English Translation & Meaning)

人ごとに変はるは夢の惑ひにて
覚むれば同じ心なりけり

Roma-ji: Hito goto ni kawaru wa yume no madoi nite samureba onaji kokoro narikeri
English Translation: That from each to each
hearts seem to differ is but
delusion in a dream;
once we wake, they are the same,
one heart in all of us
Meaning: That hearts seem to differ from one person to the next is only the delusion of a dream; once we wake, they are all one and the same heart.
Commentary: Book Nineteen Buddhist Poems 1223

Headnote: "Composed on the Wisdom of Equality, when I had a hundred-poem sequence composed and wrote on the Tathāgatas of the five wisdoms among the poems on the Buddhist teaching"
When he had a hundred-poem sequence composed, among the poems on the Buddhist teaching he wrote on the Tathāgatas of the five wisdoms, and this one is on the Wisdom of Equality. That hearts differ from person to person is the delusion of a dream; on waking they are one and the same, he says. The Wisdom of Equality is the Buddha's wisdom that leaves behind all distinction of self and other and sees all things as equal; the differences we see in people's hearts belong only to the dream of delusion, and on awakening all are seen to share one heart.
The author, "Regent and Former Minister of the Right," is Kujō Kanezane. A son of the Regent Fujiwara no Tadamichi, he became regent after serving as minister of the right. He left the diary Gyokuyō and was the elder brother of Jien and the father of Yoshitsune.
1228 and 1229 in this book are poems on the Buddhist teaching composed for this same hundred-poem sequence at Kanezane's house.

First line, "hito goto ni": "from one person to the next."
Second line, "kawaru wa yume no": "that hearts differ is the dream's," likening the world of delusion to a dream.
Third line, "madoi nite": "is but delusion."
Fourth line, "samureba onaji": "once awakened, the same," likening enlightenment to waking from a dream.
Fifth line, "kokoro narikeri": "keri" is an exclamatory auxiliary of realization, voicing the awakened heart that sees it was one heart all along.
Author: Kujō Kanezane
Source: Senzai Wakashu
Prev Poem: Furusato o hitori wakaruru yūbe ni mo okuru wa tsuki no kage to koso kike
Next Poem: Sumeba miyu nigoreba kakuru sadame naki kono mi ya mizu ni yadoru tsukikage