Al-Bukhari and Muslim likewise transmit from ʿĀʾishah—may Allah be pleased with her—that the Messenger of Allah ﷺ said, “The people who will receive the severest punishment on the Day of Resurrection are those who seek to imitate Allah in creation.” (1)
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Both of them: that is, al-Bukhari and Muslim.

seek to imitate Allah in creation: meaning, by what they fashion they try to resemble what Allah has fashioned.

Overall meaning of the ḥadith: The Prophet ﷺ, in a statement whose intent is prohibition and stern warning, informs us that the image-makers will suffer the most intense punishment in the Hereafter, for they have committed a hideous crime—producing forms that resemble Allah’s creation.

Relevance of the ḥadith to the chapter: it shows the severity of the punishment awaiting image-makers, indicating that image-making is a major crime.

Points derived from the ḥadith:
1- The prohibition of image-making in all its forms and by whatever means, for it is an imitation of Allah’s creation.
2- Punishment on the Day of Resurrection will vary in proportion to the crimes committed.
3- Image-making is among the gravest sins; it is one of the major sins.