All I can find about prayer is this dua you have to recite before sex-
Sahih Al-Bukhari Hadith 8.397 Narrated by Ibn Abbas
The Prophet (saw) said, "If anyone of you, when intending to have a sexual intercourse with his wife, says: 'Bismillah, Allahumma jannibna-sh-shaitan, wa jannibi-sh-shaitan ma razaqtana,' and if the couple are destined to have a child (out of that very sexual relation), then Satan will never be able to harm that child."
I always thought this is hilarious. Having sex with my missus is not anybody's buisness... Not Mohammad, not Allah. Even before I knew Islam was BS, I decided if I was to make love to a woman, I said to myself I will never perform these silly ritualls. In fact on my wedding night I refused to follow an Islamic cultural thing where the familly and friends will lead you to the wedding house (my house) reciting Quran and duaa and singing that incuded the word "Mohammad" and I thought to myself, what the fuck, is it me who is getting married or him??
Anyways, what I did was a very different from what people hear do, I sort of westernized my wedding of course after taking permission of my lovely wife. On the wedding day we attended a little cermony where some music was played, met and said hello to the guests and after dinner we changed and drove to the airport to fly for our 3 weeks honeymoon. We reduced the usuall 3 days rituals to just one night celebration, and boy did we get the look?
Anyways, I am glad now that kept Mr Mohamed out of my wedding!