What action is claimed in fakaknā ghulla Imriʾ al-Qays?

al-Ḥārith ibn Ḥillizah: Ḥujr, Royal Kinship and the Dhū al-Majāz Covenant (verses 56–67)

• Setting up a royal tent
• Freeing a captive from his fetter
• Writing a treaty
• Building a fortress