Shiva Purana

siva.sh/siva-purana/vayaviya-samhita/39/21

सा वाचामीश्वरी शक्तिर्वागीशाख्या हि शूलिनः ॥ या सा वर्णस्वरूपेण मातृकेपि विजृम्भते ॥ २१ ॥

sanskrit

That is the deity of speech, the Śakti of Śiva named Vāgīśā; the same in the form of letters becomes manifest as Mātṛkā.

english translation

sA vAcAmIzvarI zaktirvAgIzAkhyA hi zUlinaH ॥ yA sA varNasvarUpeNa mAtRkepi vijRmbhate ॥ 21 ॥

hk transliteration by Sanscript

siva.sh/siva-purana/vayaviya-samhita/39/21

सा वाचामीश्वरी शक्तिर्वागीशाख्या हि शूलिनः ॥ या सा वर्णस्वरूपेण मातृकेपि विजृम्भते ॥ २१ ॥

sanskrit

That is the deity of speech, the Śakti of Śiva named Vāgīśā; the same in the form of letters becomes manifest as Mātṛkā.

english translation

sA vAcAmIzvarI zaktirvAgIzAkhyA hi zUlinaH ॥ yA sA varNasvarUpeNa mAtRkepi vijRmbhate ॥ 21 ॥

hk transliteration by Sanscript