Satī continued: My dear father, you are committing the greatest offense by envying Lord Śiva, whose very name, consisting of two syllables, śi and va, purifies one of all sinful activities. His order is never neglected. Lord Śiva is always pure, and no one but you envies him.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
यद् द्व्यक्षरं नाम गिरेरितं नृणां सकृत्प्रसङ्गादघमाशु हन्ति तत् । पवित्रकीर्तिं तमलङ्घ्यशासनं भवानहो द्वेष्टि शिवं शिवेतरः
yad dvyakṣaraṃ nāma gireritaṃ nṛṇāṃ sakṛtprasaṅgādaghamāśu hanti tat | pavitrakīrtiṃ tamalaṅghyaśāsanaṃ bhavānaho dveṣṭi śivaṃ śivetaraḥ
SB 4.4.14