What is the original Chinese?

不知周之夢爲胡蝶與？胡蝶之夢爲周與？. Translated from the original Chinese by Spartan Surfers.

Am I Zhuang dreaming a butterfly, or a butterfly dreaming Zhuang?

Zhuangzi, Zhuangzi 2 (The Adjustment of Controversies)

The source

"Am I Zhuang dreaming a butterfly, or a butterfly dreaming Zhuang?" Zhuangzi said it in Zhuangzi 2 (The Adjustment of Controversies). Translated from the original Chinese by Spartan Surfers.

"不知周之夢爲胡蝶與？胡蝶之夢爲周與？"

Original Chinese, Zhuangzi 2 (The Adjustment of Controversies). Chinese: Zhuangzi text via zh.wikisource; chapter title after Legge 1891.

Who said it

Zhuangzi (c. 369–286 BC). Taoist storyteller of the butterfly dream, the useless tree and the cook who never dulled his knife.

Questions

Who said "Am I Zhuang dreaming a butterfly, or a butterfly dreaming Zhuang?"?: Zhuangzi (c. 369–286 BC). Source: Zhuangzi 2 (The Adjustment of Controversies).
What is the original Chinese?: 不知周之夢爲胡蝶與？胡蝶之夢爲周與？. Translated from the original Chinese by Spartan Surfers.