Abdullah bin Abbas (may Allah be pleased with them both) said: The Messenger of Allah (peace and blessings be upon him) said: "When any one of you has intercourse with his wife, what is there to prevent him from saying this supplication (i.e., he should recite this supplication at the time of intercourse) «بِسْمِاللّٰهِاَللّٰهُمَّجَنِّبْنَاالشَّيْطَانَوَجَنِّبِالشَّيْطَانَمَارَزَقْتَنَا» 'In the name of Allah, O Allah, keep us away from Satan and keep Satan away from what You grant us (as a result of this intercourse).' After reciting this supplication, any child that is born to the couple from this intercourse will never be harmed by Satan."
Hadith Referenceسنن دارمي / من كتاب النكاح / 2249
Hadith Gradingتحقیق (حسین سلیم أسد الدارانی):إسناده صحيح والحديث متفق عليه، [مكتبه الشامله نمبر: 2258]
Hadith Takhrijاس روایت کی سند صحیح اور حدیث متفق علیہ ہے۔ دیکھئے: [بخاري 141، 3271] ، [مسلم 1434] ، [أبوداؤد 2161] ، [ترمذي 1092] ، [ابن ماجه 1919] ، [طيالسي 1587] ، [أحمد 220/1، 243] ، [ابن السني 608، وغيرهم]