After (praising Allah and blessing the Prophet) that: The Messenger of Allah ﷺ used to command us to build mosques in our localities and keep them well and clean. (Using translation from Abū Dāʾūd 456)
«إِنَّ رَسُولَ اللهِ ﷺ كَانَ يَأْمُرُنَا بِالْمَسْجِدِ أَنْ نَصْنَعَهَا فِي دِيَارِنَا وَنُحْسِنَ صَنْعَتَهَا وَنُطَهِّرَهَا»