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)
أَنَّهُ كَتَبَ إِلَى بَنِيهِ أَمَّا بَعْدُ فَإِنَّ رَسُولَ اللهِ ﷺ كَانَ يَأْمُرُ بِالْمَسَاجِدِ أَنْ نَصْنَعَهَا فِي دِيَارِنَا وَنُصْلِحَ صَنْعَتَهَا وَنُطَهِّرَهَا