Bismillah Walhamdulillah Was Salaatu Was Salaam ‘ala Rasulillah

As-Salaam Alaikum Wa-Rahmatullahi Wa-Barakatuhu

Narrated by Ibn Abbas(Radhiallaho anho):
Allah’s Messenger (sallallaahu ‘alaihi wasallam) said, “If anyone of you when having sexual relation with his wife, say: ‘In the name of Allah. O, Allah! Protect us from Satan and prevent Satan from approaching our offspring you are going to give us,’ and if he begets a child (as a result of that relation) Satan will not harm it.”

Sahih Al-Bukhari Vol.4 : No.493