MuU 1.2.12
परीक्ष्य लोकान् कर्मचितान् ब्राह्मणो निर्वेदमायान्नास्त्यकृतः कृतेन । तद्विज्ञानार्थं स गुरुमेवाभिगच्छेत् समित्पाणिः श्रोत्रियं ब्रह्मनिष्ठम्
parīkṣya lokān karmacitān brāhmaṇo nirvedamāyānnāstyakṛtaḥ kṛtena | tadvijñānārthaṃ sa gurumevābhigacchet samitpāṇiḥ śrotriyaṃ brahmaniṣṭham
Sanskrit for this text is pending; the English follows the translator's numbering.
Let a Brâhmana, after he has examined all these worlds which are gained by works, acquire freedom from all desires. Nothing that is eternal (not made) can be gained by what is not eternal (made). Let him, in order to understand this, take fuel in his hand and approach a Guru who is learned and dwells entirely in Brahman.
Translated by F. Max Müller