Surah at-Takwir (The Wrapping ) 81 : 3

Explanatory Note

Forcing the mountains to move away probably means that they will be crushed and blown away as indicated in numerous other surahs: “They ask you about the mountains. Say: My Lord will crush them to fine dust and leave them a desolate waste.” (20: 105), “When the mountains crumble away and scatter into fine dust.” (56: 5), “And the mountains are made to move away, and seem to have been a mirage.” (78: 20)

All these verses refer to a certain event which will affect the mountains and do away with their firm foundations and stability. This may be the beginning of the quake which will shake the earth violently, and which is mentioned in Surah 99, The Earthquake: “When the earth is rocked with her final earthquake, when the earth shakes off her burdens.” (99: 1-2)