Bhagavad Gita 6.19
Dhyana Yoga · English Translation
Sanskrit
यथा दीपो निवातस्थो नेङ्गते सोपमा स्मृता | योगिनो यतचित्तस्य युञ्जतो योगमात्मनः ||६-१९||
Transliteration
yathā dīpo nivātastho neṅgate sopamā smṛtā . yogino yatacittasya yuñjato yogamātmanaḥ ||6-19||
As a lamp placed in a windless spot does not flicker to such is compared the Yogi of controlled mind, practising Yoga in the Self (or absorbed in the Yoga of the Self).
Word by Word
यथा as, दीपः lamp, निवातस्थः placed in a windless place, न not, इङ्गते flicker, सा that, उपमा simile, स्मृता is thought, योगिनः of the Yogi, यतचित्तस्य of one with controlled mind, युञ्जतः of the practising, योगम् the Yoga, आत्मनः of the Self
Classical Commentary
This is a beautiful simile. Yogins ote this simile very often when they talk of concentration or steadiness or onepointedness of the mind. A steady mind will serve as a powerful searchlight to find out the hidden spiritual treasures of the Self.