Mosques

Who is more unjust than one who prevents Allah’s name from being mentioned in His places of worship and seeks to ruin them? Such people should not enter them except in fear.

2:114And who doth greater wrong than he who forbiddeth the approach to the sanctuaries of Allah lest His name should be mentioned therein, and striveth for their ruin. As for such, it was never meant that they should enter them except in fear. Theirs in the world is ignominy and theirs in the Hereafter is an awful doom.

It is not for the polytheists to maintain Allah’s places of worship while openly disbelieving. Their deeds are worthless.

9:17It is not for the idolaters to tend Allah's sanctuaries, bearing witness against themselves of disbelief. As for such, their works are vain and in the Fire they will abide.

The only ones who maintain Allah’s places of worship are those who believe in Him and the Last Day, establish prayer, give charity, and fear none but Allah. It is they who are expected to be rightly guided.

9:18He only shall tend Allah's sanctuaries who believeth in Allah and the Last Day and observeth proper worship and payeth the poor-due and feareth none save Allah. For such (only) is it possible that they can be of the rightly guided.

Never stand in it! A mosque founded on righteousness from the first day is more worthy of your prayers. Within it are men who love to be purified, and Allah loves those who purify themselves.

9:108Never stand (to pray) there. A place of worship which was found upon duty (to Allah) from the first day is more worthy that thou shouldst stand (to pray) therein, wherein are men who love to purify themselves. Allah loveth the purifiers.

But do not be intimate with your spouses while secluded in the mosques.

2:187It is made lawful for you to go in unto your wives on the night of the fast. They are raiment for you and ye are raiment for them. Allah is Aware that ye were deceiving yourselves in this respect and He hath turned in mercy toward you and relieved you. So hold intercourse with them and seek that which Allah hath ordained for you, and eat and drink until the white thread becometh distinct to you from the black thread of the dawn. Then strictly observe the fast till nightfall and touch them not, but be at your devotions in the mosques. These are the limits imposed by Allah, so approach them not. Thus Allah expoundeth His revelation to mankind that they may ward off (evil).

There are those who built a mosque to spread harm, disbelief, and division among the believers

9:107And as for those who chose a place of worship out of opposition and disbelief, and in order to cause dissent among the believers, and as an outpost for those who warred against Allah and His messenger aforetime, they will surely swear: We purposed naught save good. Allah beareth witness that they verily are liars.