The mosques of Allah shall be visited and maintained by such as believe in Allah and the Last Day, establish regular prayers, and practise regular charity, and fear none (at all) except Allah. It is they who are expected to be on true guidance. At-Tawbah 9:18 ⧉
Tafsir:
At the time when the Quran was revealed, the position in Arabia was that the Muslims had gathered round the Prophet Muhammad and the polytheists around the Ka‘bah. Till that time the histories of glories which we are now acquainted with had not yet become attached to the name of the Prophet Muhammad. He appeared to the people like an ordinary man. On the other hand, the Sacred Mosque of Makkah, because of the thousands of years of history attached to it, appeared to them a symbol of greatness and holiness. The polytheists saw themselves as being servants and retainers of the holiest shrine. On the contrary, when they saw the Muslims, they thought of them, under the circumstances prevailing at that time, as a group of people gathered around a madman.