What is the point of the firm-intention example in zihar?

Azimah and Rukhsah: Original Rulings, Excuses, and Two Forms of Concession

• Every firm intention must count as a completed act in every chapter
• This example establishes firm resolve as a condition of every concession
• The rules of zihar are merely an etymological question
• Firm resolve can have a specified effect in a particular legal context