Dharmakīrti (c. A.D. 600-660) mentioned two examples of esoteric literature in his Pramāṇavārttikasvavṛtti: the Ḍākinītantra and Bhaginītantra. Karṇakagomin 9-10th century) rephrased Bhaginītantra as Caturbhaginītantra (The Tantra Four Sisters) commentary on Pramāṇavārttikasvavṛtti titled Pramāṇavārttikaṭīkā. An earlier study presumed that Sisters here were four goddesses Jayā, Vijayā, Ajitā/Ja...