I saw this murti in a temple and I am wondering what Shiva is doing here. It looks like he is pouring milk over himself. I never heard of him doing abishek on himself or worshipping himself. Can someone explain what he is doing and why?
This idol is looking very very beautiful.
Lord Shiva is pouring Nector from the ghatas to His head. This six-armed form is very famous as Mrityunjaya Mahadava and this form is seen at many temples and it also kept at a very prominent place in Haridwar.
As per the dhyana-mantra mentioned in Tantra-Sara,(Reference:http://www.shivashakti.com/tantrasara.htm) this form is having six hands. In middle two hands, He holds mriga-mudra and akshamala.(Here aksha-mala has been inserted in mriga-mudra and a Trident in the hand that should akshamaala by priests most probably, but the original idol is perfect. In the lower two hands, He is holding two other ghatas filled with nector.
A similar form is mentioned in the same book with eight hands as Tryamvaka-Deva in the same book. There the lower two hands are placed on His lap.He is seated on a white lotus.The Mahamrityunjaya mantra also starts with: "Triyamvakam Yajamaha".
The Mrityunjaya-Mahadeva form is well-known. I am enclosing an images that I got from the internet of this form.