Shankara Mutt located at Thiruvidaimarudur in Kumbakonam, Tamil Nadu, is famous for a rare Shivling. This Shivling has a hand and the sprouting of hand is associated with Adi Shankaracharya.
The hand in the Shivling appeared to bless and give acceptance to the Advaita concept popularized by Adi Shankaracharya.
As per local legend when Adi Shankaracharya was praying here a hand appeared from the Shivling and blessed Adi Shankaracharya by saying ‘Satyam Advaitam.’