Which two markers reinforce la-tarawunna al-jaḥīm?

Supplementary Practice 19: Comparative Rhetorical Analysis of Sūrat al-ʿAṣr and al-Takāthur

• Inna and the prepositional lām
• Hal and the feminine plural nūn
• Both qad and sawfa appear explicitly
• An emphatic lām and heavy nūn