"The Messenger of Allah said: 'The Hour will not begin until the people compete in (building) mosques.'"  

قَالَ رَسُولُ اللَّهِ ﷺ لاَ تَقُومُ السَّاعَةُ حَتَّى يَتَبَاهَى النَّاسُ فِي الْمَسَاجِدِ  

The Messenger of Allah said: "I see you building your mosque high after I am gone, just as the Jews built their synagogues high and the Christians built their churches high."  

قَالَ رَسُولُ اللَّهِ ﷺ أَرَاكُمْ سَتُشَرِّفُونَ مَسَاجِدَكُمْ بَعْدِي كَمَا شَرَّفَتِ الْيَهُودُ كَنَائِسَهَا وَكَمَا شَرَّفَتِ النَّصَارَى بِيَعَهَا  

The Messenger of Allah said: "No people's deeds ever became evil deeds but they started to adorn their places of worship."  

قَالَ رَسُولُ اللَّهِ ﷺ مَا سَاءَ عَمَلُ قَوْمٍ قَطُّ إِلاَّ زَخْرَفُوا مَسَاجِدَهُمْ