What is the ruling on saying "A'udhu billahi minash-shaytanir-rajeem" (I seek refuge in Allah from the accursed Satan) and spitting three times after "At-tahiyyatu lillah" (All greetings are for Allah) in the final Tashahhud, and then completing the Tashahhud and repeating it due to doubt?

Reciting the ta'awwudh (seeking refuge with Allah) during thew last tashahhud (definition), turning aside, spitting three times, and repeating the tashahhud—none of these invalidate the prayer or necessitate the prostration of forgetfulness (sujud (definition) al-sahw), because they are considered minor actions or prescribed dhikr (remembrance of Allah) performed out of their proper place. Consequently, the prayer is valid, and nothing is required of you.