Here is the Sanskrit anuvad, Hindi anuvad, and English translation of Atma-Samyama Yoga Chapter 6, Verse 6.19.
Sanskrit
यथा दीपो निवातस्थो नेङ्गते सोपमा स्मृता । योगिनो यतचित्तस्य युञ्जतो योगमात्मनः ॥ ६.१९ ॥
Hindi
जिस प्रकार वायुरहित स्थानमें स्थित दीपक चलाय मान नहीं होता, वैसी ही उपमा परमात्माके ध्यानमें लगे हुए योगीके जीते हुए चित्तकी कही गयी है|
English
The Almighty explained: Just as the flame of a lamp does not flicker in a place without wind, in the same way the controlled mind of the Yogi does not get distracted by worldly objects or pleasures.