They saw that animate beings like plants withered away and turned into dust...
Say: "Indeed, those of old, and those of later times, 50. "All shall certainly be gathered together on an appointed Day. Addressed to the Noble Prophet of Islam (S), the blessed Verses in question say unto him that the former and the later generations of them from amongst their forefathers to their last generation see the light in this world and they shall all get together on an appointed Day when shall meet one another and the records of their deeds shall be investigated.
The Arabic word miqat ("meeting place") is cognate with waqt denoting a certain time appointed for carrying out something and it herein connotes the appointed time for Resurrection, in which all mankind shall meet so that their records of deeds be investigated. The word miqat is also applied to a certain place appointed for carrying out something, like those of pilgrimage to Mecca where pilgrims put on their pilgrimage garbs (ihram).
"Then moreover, indeed you the erring deniers! 52. "You indeed shall eat of the tree of Zaqqum. 53. "Then you shall fill your bellies therewith. Proceeding with the enumeration of the chastisements of the people on the Left Hand, the blessed Verses 51-53 address them saying: "Then, O erring deniers!
You shall eat of the tree of Zaqqum filling your bellies by it." The preceding Verses just treated of the dwelling place of the people on the Left Hand in Hell, but the blessed Verses in question deal with their food.