Parad or Mercury is regarded as sperm (seed) of Lord Shiva in ayurveda. Parad shivling is considered as Lord Shiva and is regarded as of wonderful changes and powers. Lord Shiva said to Maa Parvati that one who worships Parad shivling is not suffered with poverty and nor fear of death. All material things like fame, name, post, power and wealth can be detained by worship of this. It destroys many diseases and increases human health.. It is a very accessible and powerful way of getting the blessings of Shiva It's attainment leads to prosperity and success.