They say that the Vedic hymns are the cerebral passage of the Lord, and His jaws of teeth are Yama, god of death, who punishes the sinners. The art of affection is His set of teeth, and the most alluring illusory material energy is His smile. This great ocean of material creation is but the casting of His glance over us.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
छन्दांस्यनन्तस्य शिरो गृणन्ति दंष्ट्रा यमः स्नेहकला द्विजानि । हासो जनोन्मादकरी च माया दुरन्तसर्गो यदपाङ्गमोक्षः
chandāṃsyanantasya śiro gṛṇanti daṃṣṭrā yamaḥ snehakalā dvijāni | hāso janonmādakarī ca māyā durantasargo yadapāṅgamokṣaḥ
SB 2.1.31