Wa `alaykum as-Salamu wa Rahmatullahi wa Barakatuh.
If the mistake you made while reading Tashahhud is grave and it changes the meaning, then you should repeat the prayer. Otherwise, you need not do so; it is good to offer the Sujud al-Sahw if you realized the mistake before finishing the prayer.
Allah Almighty knows best.
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Views expressed by hosts/guests on this program (live dialogue, Facebook sessions, etc.) are their own and their appearance on the program does not imply an endorsement of them or any entity they represent.
Views expressed by hosts/guests on this program (live dialogue, Facebook sessions, etc.) are their own and their appearance on the program does not imply an endorsement of them or any entity they represent.