Shiva Mahimna Stotram Verse 35
महेशान्नापरो देवो महिम्नो नापरा स्तुतिः।
अघोरान्नापरो मन्त्रो नास्ति तत्त्वं गुरोः परम्॥Maheśānnāparo devo mahimno nāparā stutiḥ|
Aghorānnāparo mantro nāsti tattvaṁ guroḥ param||
There is no God greater than Lord Mahesha, No Stuti greater than Mahimna, No Mantra greater than the Aghora, And no Tatwa greater than the Guru.
Which Mantra exactly is mentioned here?