Bhagavad Gita 2.70

आपूर्यमानमचलप्रतिष्ठां समुद्रमाप: प्रविशन्ति यद्वत् |
तद्वत्कामा यं प्रविशन्ति सर्वे स शांतिमाप्नोति न कामकामि

Translation

Just as the ocean remains undisturbed by the incessant flow of waters from rivers merging into it, likewise the sage who is unmoved despite the flow of desirable objects all around him attains peace, and not the person who strives to satisfy desires.