Sāṃkhya Kārikā verse 24

abhimānaḥ ahaṃkāraḥ tasmād dvidhaḥ pravartate sargaḥ |
ekādāśakaḥ ca gaṇaḥ tanmātraḥ pañcakaḥ ca-eva ||

ahaṃkāra - individuation; conception of individuality; the making of selftasmāt - from that, on that account, thereforepravarta - engaging in, undertakingca - andtanmātra - thatness, only that; a rudimentary or subtle element;pañca - fiveeva - thus