إِنَّمَا يَعْمُرُ مَسَاجِدَ اللَّهِ مَنْ آمَنَ بِاللَّهِ وَالْيَوْمِ الْآخِرِ وَأَقَامَ الصَّلَاةَ وَآتَى الزَّكَاةَ وَلَمْ يَخْشَ إِلَّا اللَّهَ فَعَسَىٰ أُولَٰئِكَ أَن يَكُونُوا مِنَ الْمُهْتَدِينَ 

The mosques of Allah shall be visited and maintained by such as believe in Allah and the Last Day, establish regular prayers, and practice regular charity, and fear none (at all) except Allah. It is they who are expected to be on true guidance. (Surah At-Tawba, 18)