Shiva Purana
शिवावतारः सुखदो ह्यष्टमो बगलामुखः ॥ शक्तिस्तत्र महानन्दा विख्याता बगलामुखी ॥ ९ ॥
The eighth pleasant incarnation of Śiva is Bagalāmukha. Śakti there, is Bagalāmukhī who is also famous as Mahānandā.
english translation
zivAvatAraH sukhado hyaSTamo bagalAmukhaH ॥ zaktistatra mahAnandA vikhyAtA bagalAmukhI ॥ 9 ॥
hk transliteration by Sanscript