Bhagavad Gita · 18.13

पञ्चैतानि महाबाहो कारणानि निबोध मे।साङ्ख्ये कृतान्ते प्रोक्तानि सिद्धये सर्वकर्मणाम्॥

pañchaitāni mahā-bāho kāraṇāni nibodha me sāṅkhye kṛtānte proktāni siddhaye sarva-karmaṇām

O mighty-armed one, learn from Me these five factors, as declared in Sankhya philosophy, for the accomplishment of all actions.

— Bhagavad Gita 18.13

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)