The works of Ādi Śaṅkarācārya

Viṣṇusahasranāmastotram

Verse 230

सेयं वदनवल्मीकवासिनी रसनोरगी ।या न गोविन्द गोविन्द गोविन्देति प्रभाषते ॥

In plain words

The tongue that never says Govinda, Govinda, Govinda — that one is a snake, coiled in the anthill of the mouth.

Close to the Sanskrit

This very one is a tongue-serpent dwelling in the anthill of the mouth — she who does not speak forth 'Govinda, Govinda, Govinda.'