BG 6.19

As a lamp in a windless place does not waver, so the transcendentalist, whose mind is controlled, remains always steady in his meditation on the transcendent Self.

6.19. 'Just as a lamp in the windless place does not shake' - This simile is recalled in the case of the man of Yoga, with subdued mind, practising the Yoga in the Self.

6.19 The wise man who has conquered his mind and is absorbed in the Self is as a lamp which does not flicker, since it stands sheltered from every wind.

6.19 Yatha etc. Just as a lamp existing in the windless palce does not shake, so is the man of Yoga. Shaking in his case is the efforts like aciring sense objects and so on. Now, the characteristic of this Brahman - Itself being Its own nature - is described indirectly with a good number of adjectives. This is different from the characteristics assumed in other systems -

6.19 As a lamp does not flicker in a windless place, i.e., does not move, but remains steady with its illumination - this is the simile used to illustrate the nature of the self of the Yogin who has subdued his mind, who has got rid of all other kinds of mental activity and who is practising Yoga concerning the self. The meaning is that the self remains with its steadily illumining light of knowledge because all other activities of the mind have ceased, just as a lamp kept in a windless place has an unflickering flame.

6.19 Yatha, as; a dipah, lamp; nivata-sthah, kept in a windless place; na ingate, does not flicker; sa upama, such is the simile-that with which something is compared is an upama (smile)-; smrta, thought of, by the knowers of Yoga who understand the movements of the mind; yoginah, for the yogi; yata-citasya, whose mind is under control; and yunjatah, who is engaged in; yogam, concentration; atmanah, on the Self, i.e. who is practising Self-absorption. By dint of practising Yoga thus, when the mind, comparable to a lamp in a windless place, becomes concentrated, then-

6.19 'A lamp does not flicker in a windless place' - that is the simile employed for the subdued mind of a Yogin who practises Yoga.

6.19 As a lamp kept in a windless place does not flicker, such is the simile thought of for the yogi whose mind is under control, and who is engaged in concentration on the Self.