Yoga Sūtra Chapter Three verse 18

संस्कारसाक्षात्करणात् पूर्वजातिज्ञानम् ॥१८॥

saṃskāra-sākṣāt-karaṇāt-pūrva-jāti-jñānam ||18||

Effecting directly seeing tendencies,
knowledge of previous existences.

saṃskāra - tendencies, psychological imprint, mental impression, habitual potency; making ready, preparation; a sacred or sanctifying ceremonysākṣāt - directly seeingkaraṇa - making, effectingpūrva - eastward, to the east of; in front, before; former, prior, preceding, previous to, earlier thanjāti - existencejñāna - knowing; knowledge; higher knowledge