Bhagavad Gita Verse 2.61

इसलिये साधकको चाहिये कि वह उन सम्पूर्ण इन्द्रियोंको वशमें करके समाहितचित्त हुआ मेरे परायण होकर ध्यानमें बैठे, क्योंकि जिस पुरुषकी इन्द्रियाँ वशमें होती हैं, उसीकी बुद्धि स्थिर हो जाती है|

The yogis or My divine devotees have gained or achieved self control; they have complete control of their senses and therefore they have also earned the power of constant wisdom. Their minds are constantly focussed and concentrated on ME, the Supreme Goal.