Is the prayer considered valid if the transitional takbir is intentionally repeated without reason?

If a worshipper intentionally repeats a prescribed utterance in prayer, such as Al-Fatiha or Takbeer, their prayer is not invalidated. This is because it does not violate the fundamental purpose of the prayer or its obligatory form. This is the view of the majority of jurists. However, such repetition is disliked because it deviates from the prophetic guidance, unless it is for a legitimate Shar'i purpose, such as rectifying an oversight or achieving presence of heart.