शिवेति नामदावाग्नेर्महापातकपर्वताः |
भस्मीभवंत्यनायासात्सत्यं सत्यं न संशयः || 23 ||
Large mountains of sin become (burnt to) ash with little effort by the huge fire in the form of the name of Shiva. No doubt, this is true.
This same shloka repeats in the fourth chapter of Rudra Samhita, Srishtikhanda, shloka 45 as spoken by Lord Vishnu to Narada. A block of 20 shlokas repeat there with slight differences in one of them.