Translation of the verse 33 from Surah Al-Mursalat : Number of verses 50 - - page 581 - Part 29.
As if they were Jimalatun Sufr (yellow camels or bundles of ropes)."
As if they were yellowish [black] camels.
(77:33) which seem as though they are yellow-coloured camels. *19
*19) That is, each spark will be like a castle, and when these huge sparks will rise and burst and fly about in all directions it will seem as though they were yellow camels running and jumping about ceaselessly.
Source : Al-Mursalat Verse 33: As if they were yellowish [black] camels.