Verbalization for Vows, Oaths and Divorce

Answered by Shaykh Yūsuf Badāt Question: Do the religious activities (example: vows, divorces, oaths, etc.), which require verbal utterance of a person, come into effect by mere movement of tongue without using the lips? Even if one uses the lips along with the tongue, but does not make an audible word, would his utterance come…