What does idhā sajā add to the oath by the night?

Supplementary Practice 18: Rhetorical Analysis of Sūrat al-Ḍuḥā and Sūrat al-Sharḥ

• It negates the existence of night
• It selects a particular state of nocturnal stillness
• It changes night from agent to direct object
• It turns the oath response into a conditional command