Origin of Goddess Matangi :--
The second myth associated with the origin of Matangini has been derived from the Pranatosini- Tantra. When Parvati did not return from her fathers abode Shiva disguised himself as an ornament maker and went to her. To test her faithfulness he asked her for lovemaking. Parvati became furious but stopped upon realizing his identity. Later Parvati disguised herself as a huntress and approached Shiva. Lord Shiva was so impressed with her that he even made love with her. While making love Shiva was himself turned into Chandala and realized that the Chandala was his wife Parvati. The goddess requested to Shiva that as they made love in the form of a Chandalini, this form would last forever and will be named as Uccista- Chandalini.
The third myth has been derived from the Svatantra- Tantra. According to legend once Matanga assumed austerities to achieve the power to suppress all creatures. He practiced his asceticism for thousands of years. Finally Goddess Tripura Sundari appeared and emitted rays from her eyes from which Goddess Kali emerged. Kali put on a greenish complexion and took the form of Raja-Matangini. With the help of the goddess Matanga fulfilled his desire to control all creatures.