Bhagavad Gita 2.68
तस्माद्यस्य महाबाहो निगृहीतानि सर्वशः। इन्द्रियाणीन्द्रियार्थेभ्यस्तस्य प्रज्ञा प्रतिष्ठिता।।2.68।।
tasmādyasya mahābāho nigṛhītāni sarvaśaḥ| indriyāṇīndriyārthebhyastasya prajñā pratiṣṭhitā||2.68||
tasmadyasya mahabaho nigrihitani sarvashah indriyanindriyarthebhyastasya prajna pratishthita2.68
Meaning
Therefore, one whose senses are completely withdrawn from their objects has steady wisdom. Mastery over the senses is the foundation of spiritual life.
इसलिए हे महाबाहो! जिसकी इन्द्रियाँ सभी प्रकार से इन्द्रिय-विषयों से निग्रहीत (वश में) हैं, उसकी प्रज्ञा स्थिर होती है।
This is verse 68 of 72 in Chapter 2 (Sankhya Yoga) of the Bhagavad Gita.