In this form Durga is two-armed and carries a trident and lotus. Her mount is an ox or bull. Sailaputri is believed to be the rebirth of Sati, the daughter of Daksha and the wife of Lord Shiva. In her second birth she is Parvati, the daughter of Himalaya and later she became the consort of Shiva. This is one of the very first forms of Shakti and is closely associated with Lord Shiva. Shailaputri is worshipped on the first day of Navaratri.
Shailaputri helps to overcome the pride of the divine beings (which are also we)