What is the consequence of the qualification “in lam yamnaʿ minhu māniʿ”?

Fronting the Subject: Restriction, Reinforcement and the al-Jurjani–al-Sakkaki Debate

• Every fronted subject necessarily signals exclusivity
• A pronoun can only reinforce, never restrict
• An obstacle means only that the noun is indefinite
• Fronting does not entail restriction where context or meaning blocks it