What is the function of the second khidr in khidra ʿUnayzah?

Imruʾ al-Qays: Dialogue in ʿUnayzah’s Litter, Boasting, and an Oath (Verses 13–18)

• A second perfect verb
• The subject of the first khidr
• A verb governed by prohibitive lā
• An appositional phrase identifying the first khidr