Is saying Basmalah in Salah an act of the Sunnah?

Q 1: Did the Prophet (peace be upon him) use to begin Salah with Basmalah ('Bismillah Al-Rahman, Al-Rahim [In the Name of Allah, the Most Gracious, the Most Merciful]')?

(Part No. 6; Page No. 378)  A: The authentic Sunnah shows that the Prophet (peace be upon him) used to say Basmalah before reciting Surah Al-Fatihah and other Surahs except Surah Al-Tawbah while performing Salah. However, he (peace be upon him) did not say it aloud in the Jahri Salah (Prayer recited out loud).May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.