The term /jimalah/ 'camels' is a plural form of /jamal/ 'camel' ...
The term /jimalah/ 'camels' is a plural form of /jamal/ 'camel' , and the word /sufr/ is a plural form of /asfar/ which means: that which is yellow', because sparks of fire are usually a redish yellow. In the former verse the sparks, from the point of view of size, were likned to castles and in this verse, from the point of view of number, color, and speed, they are likened to a number of yellow marching camels. When the sparks are so, it is obvious what the blazing fire is!
And, besides this, how many other punishments are there nearby? Supplication: O Lord! Please protect all of us against it with Your Mercy. At the end of this portion, once more, the same refrain is repeated: Ah woe, that Day, to the Rejecters of Truth. Then another explanation about the characteristics of that terrible Day begins.
It says: This is a day wherein they speak not, (they will not be in a position to put forward any valid defense or plea) Yes, it is true that on that Day the sinners will be dumbfounded. This fact is also mentioned in Sura Yasin, No.36, verse 65 That Day shall We set a seal on their mouths... . And, also at the end of the same verse it says: But their hands will speak to Us, and their feet will bear witness to all that they did .
And even more, in some other verses it is said that their skins will speak and bear witness to what should be said. Nor will it be open to them to put forth excuses. They are allowed neither to say anything nor to excuse and defend, because the facts will speak plainly enough, against them, and they do not need to speak.
In the human world, this prevaricatingtong ue misused its freedom: falsely denied the prophets, mocked the righteous, canceled the right, and substituted the wrong in place of the right. So, in the spiritual world this tongue should be locked and shut as a punishment. The very state is a torment, too, because one cannot defend or excuse oneself.
There is a narration from Imam Sadiq (p.b.u.h.) in which he says: Allah is greater and more just than not to allow His servant to apologize to Him with his plausible excuse.
But they have no plausible excuse, indeed, to bring up.(1) From some of the verses, of course, it is understood that sinners can speak sometimes in the Hereafter, since, there are many halting places, therein, where some of their tongues are shut and their limbs bear witness, and in some others, their tongues are allowed to express their intensive begrudging, grief, and disaster.