Does the mispronunciation of words nullify my prayer?

Dear questioner,
Thank you for your important question.
May Allah, Most High, reward you for your desire to increase in knowledge.
  1. Unintentionally mispronouncing a letter or two does not nullify your prayer. Your prayer is valid.
  1. Reciting the incorrect word in a verse and then returning to correct it does not affect the prayer’s validity. Your prayer is valid.
(Ibn Abidin, al-Hashiya)
Before beginning your prayer, consider reciting the ta`awwudh (I seek refuge in Allah from the accursed devil) and make a short supplication to ask Allah to free you of misgivings.
And Allah alone knows best,
[Ustadh] Omar Popal
Checked and Approved by Shaykh Faraz Rabbani