मोक्षैकसक्त्या विषयेषु रागंनिर्मूल्य संन्यस्य च सर्वकर्म ।सच्छ्रद्धया यः श्रवणादिनिष्ठोरजः स्वभावं स धुनोति बुद्धेः ॥ १८४ ॥
In plain words
With his heart set on liberation alone, he uproots every attachment to sense-objects and renounces all action. With genuine faith, he devotes himself to listening to the truth and everything that follows from it -- and in doing so, he shakes off the restless, rajasic nature of his own intellect.
Close to the Sanskrit
Having uprooted attachment toward sense-objects through single-minded devotion to liberation, and having renounced all action, whoever, with true faith, is devoted to hearing the scriptures and so on -- he shakes off the rajasic nature of the intellect.