Does clearing one's throat inadvertently during prayer invalidate it?

Whoever clears their throat in prayer forgetfully, their prayer is valid and not invalidated, even if two letters or more become apparent. They are not required to perform the prostration of forgetfulness (sujood as-sahw), because clearing the throat is not more severe than speaking, and the majority of scholars believe that the prayer of one who speaks forgetfully is not invalidated.