The concept and form of Sadasiva initially emerged from South India, although many ancient sculptures of Sadasiva were obtained from various parts of India and South East Asia. It is believed that the cult of Sadasiva was widespread in the region of Bengal during the period of Sena dynasty who traced their origin in South India. Sadasiva is usually represented in the form of Mukhalingam with the number of faces varying from one to five. The first ever sculpture of Sadasiva as a lingam with five faces was found in Bhita, near Allahabad, and dates to the 2nd century CE. His five faces, Ishana, Tatpurusha, Vamadeva, Aghora and Satyojata are known as Panchabrahmas (The five creators), the emanations towards the four directions and upwards from the nishkala (Formless) Parashivam. Kamiga Agamam, the first Agamam of 28 Sivagamas depicts Sadasiva as having five faces and ten arms. His five right hands hold Trishula, Axe, Katvanga, Vajra and Abhaya while his five left hands hold Snake, Matulunga fruit, Nilotpala, Damaru, Rudraksha rosary and Varadam. The consort of Sadasiva is goddess Gayatri, a form of Parvati often known as Manonmani in Agamic texts. She is sometimes depicted having two arms and residing in the lap of Sadasiva.