What purpose of the covenant is conveyed by ḥadhara al-jawri wa-l-taʿaddī?

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

• Building an old tent
• Protection against injustice and aggression
• Only praise of the ruler
• Increasing the spoils