Sankhya Karika Verse 18
Sanskrit Verse
जननमरणकरणानां प्रतिनियमादयुगपत्प्रवृत्तेश्च । पुरुषबहुत्वं सिद्धं त्रिगुण्यविपर्ययाच्चैव ॥१८ ॥
Transliteration
janana-maraṇa-karaṇānāṃ pratiniyamāt-ayugapat-pravṛtteḥ ca | puruṣa-bahutvaṃ siddhaṃ tri-guṇya-viparyayāt-ca-eva ||
Translation
From the individual allotment of birth, death and the Instruments, from non-simultaneous activity (towards the same end), and from the diverse modification of the three Gunas, multitude of Purusas is verily established.
Reference: Sankhya Karika

Muni's Play