Does inadvertently making a sound during prayer, such as the sound of a yawn or breathing, invalidate the prayer?

A slight sound during prayer due to yawning or the like: If it is beyond the worshiper's control, such as being overcome by a yawn and saying, "Ah," or breathing heavily, or coughing and uttering two letters, then the prayer is not invalidated. However, if it is intentional, some jurists have said it invalidates the prayer, while others say it does not. The more cautious approach is to repeat the prayer if two or more letters are distinctly uttered.