Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 4
Sanskrit:
यथादृढै: कर्ममयै: क्रतुभिर्नामनौनिभै: । विद्यामान्वीक्षिकीं हित्वा तितीर्षन्ति भवार्णवम् ॥ ४ ॥
ITRANS:
yathādṛḍhaiḥ karma-mayaiḥkratubhir nāma-nau-nibhaiḥvidyām ānvīkṣikīṁ hitvātitīrṣanti bhavārṇavam
Translation:
Their taking shelter of Kṛṣṇa is just like the foolish attempt of men who abandon transcendental knowledge of the self and instead try to cross over the great ocean of material existence in the false boats of fruitive, ritual sacrifices.