These readings are in the jussive, conjoined to the preceding consequence of the conditional. The first verb varies between forms III and II, respectively.
يُضَاعَفُ - وَيَخۡلُدُ
yuḍāʿafu...wa-yakhludu
يُضَعَّفُ - وَيَخۡلُدُ
yuḍaʿʿafu...wa-yakhludu
“Their torment will be doubled...”
These readings are indicative as a new sentence.
Explication
These readings convey the same meaning with slightly different grammar. The verb form III arguably denotes a greater increase than form II.
Explication
These readings convey the same meaning with slightly different grammar. The verb form III arguably denotes a greater increase than form II.