What failure is criticized in fa-yabkhal bi-faḍlihi ʿalā qawmihi?

Zuhayr ibn Abī Sulmā: Age, Mortality, Honor, and Keeping Promises (Verses 43–52)

• Seeking help when genuinely needy
• Using wealth constructively
• Withholding benefits from one’s people despite having resources
• Requesting the return of entrusted goods