Which view correctly treats the implied “udhkur” before “idh”?

Qur’anic Ellipsis (Ḥadhf): Implied Words, Relationships and Rhetorical Brevity

• Treating udhkur as a mandatory missing revealed word
• Assuming idh is always unintelligible without it
• Presenting the reconstruction as the only possible parsing
• It is a possible grammatical explanation, not always obligatory