Another tale data that a demon named Madan acquired Vak-siddhi, by which no matter what he explained arrived genuine. He misused it to hassle human beings and murder men and women. Another etymology suggests that valga means "to paralyze" and symbolizes the strength of stambhana, "paralysis" that the goddess is alleged to grant; https://www.youtube.com/shorts/5VeSyP9JRw0