As a lamp placed in a windless place does not flicker — is a simile used to describe the YOGI of controlled-mind practising YOGA of the Self (or absorbed in th e YOGA -of-the-Self) .

yathā = as; dīpaḥ = a lamp; nivātasthaḥ = in a place without wind; na = does not; iṅgate = waver; sā = this; upamā = comparison; smṛtā = is considered; yoginaḥ = of the yogi; yatacittasya = whose mind is controlled; yuñjataḥ = constantly engaged; yogaṃ = in meditation; ātmanaḥ = on transcendence.;