Are there any narrations that prove that we should read ''bismillahirrahmanirrahim'' after Surah Fatiha and before the additional Surah which we read in Salaat ? Please mention them. All perfect ...

As-salamu alaykum. I was leading the salah in which I should have recited surah Fatihah out loud e.g. fajr, maghrib or isha. However, by mistake, I recited to myself in silence. I don't recall now if ...