One more tale data that a demon named Madan acquired Vak-siddhi, by which what ever he said arrived true. He misused it to issues human beings and murder people. One more etymology indicates that valga suggests "to paralyze" and symbolizes the power of stambhana, "paralysis" which the goddess is claimed to grant; this https://www.youtube.com/shorts/5VeSyP9JRw0