Patanjali's yoga sutras

सोपक्रमं निरुपक्रमं च कर्म तत्संयमादपरान्तज्ञानमरिष्टेभ्यो वा ॥ ३.२२ ॥

3.22 nirupakramam ca karma tatsamyamādaparāntajñānamaristebhyo vā

upakramam = entrance into form or being (of an action); initial or inchoate stage; beginning

nirupakramam – that which has no beginning or is existing from time immemorial

cha – and; also; both

karma – actions; work; deeds; the fruits of actions tat – that

samyama – meditation

aparanta – death; the end-point

jnanam – knowledge; awareness

aristebhyah – omens

va – or

http://centeringyoga.blogspot.com/2015/07/yoga-sutra-study-349.html?m=1

You can meditate on the law of cause and effect to gain insight into the omens and timing of death, but if you look to see how something entered into form and try to trace it back to its source, you will find that it has no beginning and has always existed.