Mercury is considered an element of Shiva, whereas sulphur, an element of Parvati and the product that was created from their union in asafoetida was called ras sindur, which was considered the essence for longevity.<ref>Soni, Suresh. India's Glorious Scientific Tradition. </ref> | Mercury is considered an element of Shiva, whereas sulphur, an element of Parvati and the product that was created from their union in asafoetida was called ras sindur, which was considered the essence for longevity.<ref>Soni, Suresh. India's Glorious Scientific Tradition. </ref> |