Yoga Sūtra Chapter Three verse 19

प्रत्ययस्य परचित्तज्ञानम् ॥१९॥

pratyasya para-citta-jñānam ||19||

Of psychic activity, knowledge of others psyche.

pratyaya - psychic activity; cause; conception, assumption, notion, idea; ground, basis, motive or cause of anythingpara - higher, highest, supreme, chief; othercitta - psyche (the totality of the human mind, conscious and unconscious); mind; heartjñāna - knowing; knowledge; higher knowledge