Bhagavad Gita 2.68

तस्माद्यस्य महाबाहो निगृहीतानि सर्वश: |
इन्द्रियाणिन्द्रियार्थेभ्यस्तस्य प्रज्ञा प्रतिष्ठिता

Translation

Therefore, one who has restrained the senses from their objects, O mighty armed Arjun, is firmly established in transcendental knowledge.