A further tale information that a demon named Madan acquired Vak-siddhi, by which whatsoever he explained arrived real. He misused it to trouble human beings and murder persons. A different etymology implies that valga signifies "to paralyze" and symbolizes the power of stambhana, "paralysis" which the goddess is alleged to grant; this idea https://www.youtube.com/shorts/5VeSyP9JRw0