Abu Huraira reported Allah’s Messenger (way peace be upon him) as saying:
The Last Hour will not come before wealth becomes abundant and overflowing, so much so that a man takes Zakat out of his property and cannot find anyone to accept it from him and till the land of Arabia reverts to meadows and rivers.
وَحَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا يَعْقُوبُ، – وَهُوَ ابْنُ عَبْدِ الرَّحْمَنِ الْقَارِيُّ – عَنْ سُهَيْلٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ “ لاَ تَقُومُ السَّاعَةُ حَتَّى يَكْثُرَ الْمَالُ وَيَفِيضَ حَتَّى يَخْرُجَ الرَّجُلُ بِزَكَاةِ مَالِهِ فَلاَ يَجِدُ أَحَدًا يَقْبَلُهَا مِنْهُ وَحَتَّى تَعُودَ أَرْضُ الْعَرَبِ مُرُوجًا وَأَنْهَارًا ” .
Reference : Sahih Muslim 157c
In-book reference : Book 12, Hadith 76
https://sunnah.com/muslim:157c
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In the context of the Saudi Green Initiative this prophecy may be another sign that we are close to the Day of Judgement. For more details on the topic please see:
Discussion 30985
With that said, whether or not the Day of Judgement is near should not have any effect on our behavior as we should be preparing for our afterlife every day anyway.