परिणामत्रयसंयमादतीतानागतज्ञानम्॥१६॥
3.16 parināmatraya-saṁyamāt-atītānāgata jñānam
parināma = transition
traya = three-fold
samyama = dharana, dhyana & samadhi
atītānāgata = past, present & future
jñānam = insight
That is the insight gained from meditating on the three-fold transition of past, present, and future.
Patanjali's yoga sutras 
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