What is the principal rhetorical force of wa-mā yuḥīru al-bukāʾ?

al-Ḥārith ibn Ḥillizah: Separation, Asmāʾ’s Dwellings, Hind’s Fire and the She-Camel (verses 1–13)

• literal calculation
• imperative
• direct exclamation
• rhetorical question expressing sorrow