Story: Sakthi Nayanar

Periyapuranam

Sakthi Nayanar (sometimes called Shaktinatha) did not tolerate any one who spoke ill about Shaivas. He is said to have forcibly pull out the tongues of the offender with tongs and cut them off with sharp knife called satti, which gave him his name.

Image of Satguru Sivaya Subramuniyaswami
This Lord of Obstacles prevents us from hurting ourselves through living under an incomplete concept or making a request unneeded or beginning an endeavor not well thought out.
—Gurudeva