Why is “wa-Allāhu aʿlam” parenthetical in “qadima Zaydun — wa-Allāhu aʿlam — baʿda al-ẓuhr”?

Supplementary Practice 5: Textual Analysis, Scope of Meaning and Rhetorical Judgment

• It describes Zayd’s physical state
• It is the genitive complement of baʿd
• It is an inserted comment; the main predication remains intact without it
• It negates the arrival