Yoga Sūtra Chapter Three verse 38

बद्न्हकारणशैथिल्यात् प्रचारसंवेदनाच्च चित्तस्य परशरीरावेशः ॥३८॥

bandha-kāraṇa-śaithilyāt-pracāra-saṃvedanāt-ca cittasya para-śarīra-āveśaḥ ||38||

Relaxation of the cause for binding and experience of maifestation,
the psyche entering other body.

bandha - binding, tying, a bond, tie, chain, fetterkāraṇa - reasons, causeśaithilya - decrease; looseness; relaxationpracāra - manifestation, appearance, coming forth, spreadingsaṃvedana - to fully experience; completely knowingca - andcitta - psyche (the totality of the human mind, conscious and unconscious); mind; heartpara - higher, otherśarīra - any solid body; bodily frame; one's bodyāveśa - entering