Professing two shahadahs. Learn Sunni Islam, Beginner. Muslim religion. Islamic Site Muslim
The Two Testifications Shahadahs
Professing the Two Shahadahs: In regards to the blasphemer who wants to embrace Islam, the belief is not accepted without one uttering the Two Testifications (Shahadahs). In addition, the Muslim is obligated to recite the Two Testifications (Shahadahs) in every prayer for validity of that prayer. The Two Testifications are: I testify that no one is God except Allâh and I testify that Muḥammad is the Messenger of Allâh.
https://www.islam.ms/en/?p=116