Question: What is the Sunnah regarding entering upon the wife on the night of the wedding, because this (issue) has caused confusion amongst many people (who think) you should recite soorah al-Baqarah and do salaah (prayer), and this manner has now become the norm with many people.
Answer: If the man enters upon his wife, when he first enters upon her, then he should take her forelock, meaning the (hair from the) front of her head and recite:
"O Allaah, I ask You for the goodness within her and the goodness that you have made her inclined towards, and I take refuge with You from the evil within her and the evil that you have made her inclined towards"
[Transmitted by Abu Daawood - Volume 2, Number 248, Ibn Maajah - Volume 1, Number 617 and Volume 1, Number 324]
However, if he fears the woman will be discomforted if he took her forelock and recited this supplication, then it is possible for him to take her forelock as if he wishes to kiss her and recite this supplication within himself without it being heard; so he would recite it with his tongue, however, she should not hear it so as not to discomfort her. And if the woman was a student of knowledge, then she knows this is legislated, so there is no harm for him to recite the supplication whilst she hears it.
As for the two rak'aat (units) of salaah when he enters the room where his wife is, then it is mentioned from some of the pious predecessors that they used to do this. So if a person does this, then it is good, and if he does not do it, then there is no harm in that. As for reciting (soorah) al-Baqarah or other than it from the soorahs, then I do not know of any basis for this.
By: Shaykh Ibn ‘Uthaymeen
Source: ‘Ishratun-Nisaa. wa Hill al-Khilaafaat az-Zawjiyyah - Page 12