Bhagavad Gita · 14.21

अर्जुन उवाचकैर्लिङ्गैस्त्रीन्गुणानेतानतीतो भवति प्रभो।किमाचारः कथं चैतांस्त्रीन्गुणानतिवर्तते॥

arjuna uvācha kair liṅgais trīn guṇān etān atīto bhavati prabho kim āchāraḥ kathaṁ chaitāṁs trīn guṇān ativartate

Arjuna asked: O Lord, by what signs is one who has transcended the three gunas recognized? What is their conduct? And how does one transcend these three gunas?

— Bhagavad Gita 14.21

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