(46) باب فِي جَامِعِ النِّكَاحِ
Ibn 'Abbas reported the Prophet (ﷺ) as saying "If anyone who means to have intercourse with his wife says "In the name of Allaah, O Allaah, keep us away from the devil and keep the devil away from what You hast provided us." It will be ordained that no devil will ever harm the child born to them.
Reference: Sunan Abi Dawud 2161
In-book reference: Book 12, Hadith 116
English translation: Book 11, Hadith 2156