What are the categories of Mubaraza (individual combat)?

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Mubaraza is divided into three categories: Recommended, Permissible, and Disliked. It is Recommended when an enemy soldier requests a duel, and a strong, courageous Muslim accepts with the Amir's permission, as it defends Muslims and displays their strength. It is Permissible when a confident, brave individual initiates the request without necessity, though there is risk of defeat; it is permitted due to his perceived strength. It is Disliked when a weak person who lacks self-confidence initiates it, as his likely defeat would demoralize the Muslims.