Al-Nasa’i also relates—on the authority of Ibn ʿAbbās—that a man once said to the Prophet ﷺ, “Whatever Allah wills and you will.” He replied, “Have you made me a rival to Allah? Rather, say: Whatever Allah alone wills.” (1)

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For him: i.e. al-Nasa’i.
“Have you made me…?”: an interrogative denoting censure.
“A rival”: that is, a partner.

Overall purport of the ḥadith: The Prophet ﷺ rebuked the man for coupling the Prophet’s will to Allah’s will with the conjunction “and,” because such linkage implies equality between the Creator and a creature. He counted this as setting up a partner with Allah and redirected all will to Allah alone.

Relevance to the chapter: The phrase “Whatever Allah wills and you will,” and anything like it, constitutes taking a rival to Allah—an act forbidden in His statement, “So do not set up rivals to Allah while you know [better]” (Qur’an, 2:22).

Lessons drawn from the ḥadith:
1- The prohibition of saying “Whatever Allah wills and you will,” or any similar wording that links the servant’s will to Allah’s will with the conjunction “and” or the like.
2- Whoever places a servant on a level with Allah—even in the realm of minor shirk—has treated him as a rival to Allah.
3- The obligation to censure wrongdoing.
4- The Messenger of Allah ﷺ zealously guarded the boundaries of pure monotheism and blocked every pathway that leads to shirk.