विशोका वा ज्योतिष्मती ॥३६॥
visoka va jyotismati
or (illumination can be reached) by the inner light that is beyond all sorrowYoga Sutras of Patanjali, 1.36
va = or
visoka = sorrow-less
jyotismati = inner light
Perhaps this is that things get so dark that you are able to see your inner light shining, like a bright star in the night sky; beyond birth, death, time and space.
St John of the Cross experienced something like this when he was imprisoned, describing it poetically and passionately in his poem “The Dark Night” –
O guiding night!St John of the Cross, The Dark Night
O night more lovely than the dawn!