These two readings are plurals of 'camel', the second being a plural of a plural. This is a comparison between the sparks from Hellfire and marching groups of camels, in terms of quantity and quick succession.
جُمَالَاتٌ
jumālātun
“yellow ropes”
This reading entails a comparison with a ship's ropes, in terms of the extension of those sparks and their movements.
Explication
These readings provide complementary meanings [Ibn 'Ashur].
He has revealed to you ˹O Prophet˺ the Book in truth, confirming what came before it, as He revealed the Torah and the Gospel
Explication
These readings provide complementary meanings [Ibn 'Ashur].