حَتَّىَ إِذَا أَخَذَتِ الأَرْضُ زُخْرُفَهَا وَازَّيَّنَتْ وَظَنَّ أَهْلُهَا أَنَّهُمْ قَادِرُونَ عَلَيْهَآ أَتَاهَا أَمْرُنَا لَيْلاً أَوْ نَهَارًا فَجَعَلْنَاهَا حَصِيدًا كَأَن لَّمْ تَغْنَ بِالأَمْسِ كَذَلِكَ نُفَصِّلُ الآيَاتِ لِقَوْمٍ يَتَفَكَّرُونَ
“Until when the earth is garnished and adorned, and its inhabitants think that they have powers (of disposal) over it; (but suddenly) comes Our command by night or by day, and We make it mowed down as though there was nothing there yesterday. Thus do We explain the signs in details for people who reflect”
Imam Sadiq (as) said, Three verses were revealed about the sons of someone.
The first verse is, “Until when the earth is garnished and adorned, and the people (its tillers) think that they have powers (of disposal) over it; (but suddenly) comes Our command by night or by day.” (The command that comes “by night or by day”) refers to our Qaem (as).
The second verse is, “We opened for them the doors of all things, until, when they rejoiced in what they were given, We caught them unaware, and then lo! They were in utter despair. So the roots of the people who were unjust were cut off and all praise be to Allah, the Lord of the worlds” (Chapter 6 verses 44-45). This refers to the rising of our Qaem (as) with the sword.
The third verse is, “So when they felt Our approaching torment, lo! They began to flee from it. (We said:) ‘Flee not, but return, and your dwellings, haply you will be questioned” (Chapter 21 verses 12-13). This refers to when the Qaem (as) will question the sons of someone about the treasures of the Bani Umayyah. (Dalael Al Imama page 468)