Bhagavatapurana 4.4.14

4.4.14

yad dvy-akṣaraṃ nāma gireritaṃ nṛṇāṃ sakṛt prasaṅgād agham āśu hanti tat /
pavitra-kīrtiṃ tam alaṅghya-śāsanaṃ bhavān aho dveṣṭi śivaṃ śivetaraḥ //

14. Alas! thou being other than what is auspicious hatest Śiva (the auspicious one), whose name is hallowed and whose command is inviolable; whose name of two syllables (Siva) uttered by the tongue, but once and incidentally, soon destroys the sin of men.