Slightly Mispronouncing Words During Salah
There is no hard and fast rule in this regard. If you think a certain minor rectification doesn’t necessitate a Sajda-e-Sehaw, you can opt to not do that. And if you think otherwise, then there’s no harm in doing Sajda-e-Sehaw. Sajda-e-Sehaw can be performed either before Salam or after Salam. Both methods are fine. After completing Tashahhud, one can say Salam and perform two Sajdas or one can perform two sajdas before saying salam after completing tashahhud, and say salam after performce of those two sajdas. Please see for details on Sajda-e-Sehaw : https://www.javedahmedghamidi.org/#!/mizan/5aa6a4315e891e8f44a45788?chapterNo=4&subChapterNo=0&subChsecNo=9&lang=en
There’s no point of saying Salam with that if done already.