By blaspheming the principles of the Vedas, which are the pure and supreme path of the saintly persons, certainly you followers of Bhūtapati, Lord Śiva, will descend to the standard of atheism without a doubt.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तद्ब्रह्म परमं शुद्धं सतां वर्त्म सनातनम् । विगर्ह्य यात पाखण्डं दैवं वो यत्र भूतराट्
tadbrahma paramaṃ śuddhaṃ satāṃ vartma sanātanam | vigarhya yāta pākhaṇḍaṃ daivaṃ vo yatra bhūtarāṭ
SB 4.2.32