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.  

قَالَ رَسُولُ اللَّهِ ﷺ لَوْ أَنَّ أَحَدَهُمْ إِذَا أَرَادَ أَنْ يَأْتِيَ أَهْلَهُ قَالَ بِاسْمِ اللَّهِ اللَّهُمَّ جَنِّبْنَا الشَّيْطَانَ وَجَنِّبِ الشَّيْطَانَ مَا رَزَقْتَنَا فَإِنَّهُ إِنْ يُقَدَّرْ بَيْنَهُمَا وَلَدٌ فِي ذَلِكَ لَمْ يَضُرَّهُ شَيْطَانٌ أَبَدًا  

This hadith is narrated through another chain of transmitters and there is no mention of (the words)" Bismillah" (In the name of Allah) in it.  

أَنَّ شُعْبَةَ لَيْسَ فِي حَدِيثِهِ ذِكْرُ بِاسْمِ اللَّهِ وَفِي رِوَايَةِ عَبْدِ الرَّزَّاقِ عَنِ الثَّوْرِيِّ بِاسْمِ اللَّهِ وَفِي رِوَايَةِ ابْنِ نُمَيْرٍ قَالَ مَنْصُورٌ أُرَاهُ قَالَ بِاسْمِ اللَّهِ