From Sahih Muslim (Hadith 3533):
Ibn" Abbas (Allah be pleased with thern) reported that Allah's Messenger (ﷺ) said:If anyone amongst you intends to go to his wife he should say: In the name of Allah,0 Allah protect us against Satan and keep away the Satan from the one that you have bestowed upon us, and if He has ordained a male child for them, Satan will never be able to do any harm to him
Reference: Muslim 3533