Lord Śīva said:

Those lowest of the Beings who insult Śākta, Bhaīrava, along with Devgaņas drink their blood.

Gaņa of Bhaīrava and Bhaīravī always destroys these sinners. Bahūraktapāyī Gaņa always drinks their blood.

Those who kill Śaktas, verbally abuses Śāktas, or insult Śāktas, O Dévésī, Śīvavallabhā pierces their head.

There is no Upāsaka superior to Śākta in three worlds.

Muņdamālā Tantra 3.41-44