The works of Ādi Śaṅkarācārya

Viṣṇusahasranāmastotram

Verse 153

ज्ञानह्रदे ध्यानजले रागद्वेषमलापहे ।यः स्नाति मानसे तीर्थे स याति परमां गतिम् ।

In plain words

There is a lake made of knowledge; its water is meditation, and it washes off the grime of wanting and hating. Whoever bathes in that place of pilgrimage inside the mind reaches the highest state.

Close to the Sanskrit

In the lake of knowledge, whose water is meditation, which carries away the impurity of attachment and aversion — he who bathes in that sacred place within the mind, he reaches the highest goal.