Why can “layta ʿaynayhi sawāʾ” bless or curse?

Tawjīh, Serious Intent in Jest, Feigned Ignorance, Qawl bi-l-Mūjib and Iṭrād

• Layta signifies two separate tenses
• The standard of equality between the eyes is unspecified
• Sawāʾ names both eyes
• ʿAynayhi is a sound masculine plural