Assalamu alaikum Ustadh. Is Salah invalid in these situations ? 1. In surah Fatiha if one stops at المغ then says-ضوب. 2. If someone elongates the bii in المغضوب Do they have to repeat all the salah they did these mistakes in? JazakAllahu Khairan

Ustadh AbdulAziz al-Haqqan
I believe this falls into waswas may Allah protect us and u.