Translation:Shulchan Aruch/Orach Chaim/280
280: Marital Intimacy on Shabbat. Contains 2 seifim.
1 Marital intimacy is one of the expressions of the pleasures of Shabbos. Therefore, the conjugal duty of healthy Torah scholars is from the night of Shabbos to the night of Shabbos.
2 It is permitted to engage in marital intimacy with a virgin for the first time on Shabbos. And there is no prohibition because of causing damage and not because of causing her pain.