Sāṃkhya Kārikā verse 22

prakṛteḥ mahāṃ tataḥ ahaṃkāraḥ tasmāt-gaṇaḥ ca ṣoḍaśakaḥ |
tasmāt-api ṣoḍaśakāḥ pañcabhyaḥ pañcabhūtāni ||

prakṛti - the original producer of the material world; nature or process of matter; nature, character, constitution, temper, dispositionmahat - great principle; intellectual principletatas - hence, from thatahaṃkāra - individuation; conception of individuality; the making of selftasmāt - from that, on that account, thereforeca - andṣoḍaśaka - consisting of sixteen, aggregate of sixteenapi - even, also, very; something more; moreoverpañca - fivebhūta - element; living being