Sāṃkhya Kārikā verse 55

tatra jarāmaraṇa kṛtaṃ duḥkhaṃ prāpnoti cetanaḥ puruṣaḥ |
liṅgasya avinivṛtteḥ tasmāt duḥkhaṃ svabhāvena ||

tatra - therekṛta - done; made; accomplished; performedduḥkha - suffering, pain, sorrowfulcetanā - consciousnesspuruṣa - animating principle, self, consciousness, spirit; a person, man, a human being; peopleliṅga - manifest, sign, genderasya - hisvṛtti - fluctuation; modification; turning; set in motion, course of action, behaviour, movement; activity, function; professiontasmāt - from that, on that account, thereforesva - own; one's selfbhāva - becoming