It's OK to have sex with your wives during Ramadan (at least after sunset). In fact you must "hold intercourse with them."
All of them. It is your sacred Muslim duty. 2:187
Menstruation is a filthy disease. All good Muslim men should stay the hell away from menstruating women And for God sakes,
don't have sex with them while they're menstruating. It creeps Allah out just to think of it. 2:222a
But don't worry guys. After they clean up you can have sex with them whenever you want. Allah loves clean men as much
as he hates menstruating women. 2:222b
In the mind of Allah, women are like a dirty field for men to plow with their penises. Plow them whenever you like
(as long as they're not menstruating, of course.) 2:223
Still, if a man doesn't want to have sex with his wives, Allah is OK with that, too. Wait four months, then if they
change their minds, go ahead and have sex with them. 2:226
When a man dies, his wives can't have sex for four months and ten days. After that, if they're not pregnant, it's no sin for
the dead man if his wives have sex again. 2:234