Bhagavad Gita · 15.18

यस्मात्क्षरमतीतोऽहमक्षरादपि चोत्तमः।अतोऽस्मि लोके वेदे च प्रथितः पुरुषोत्तमः॥

yasmāt kṣharam atīto 'ham akṣharād api chottamaḥ ato 'smi loke vede cha prathitaḥ puruṣhottamaḥ

Because I transcend the perishable and am even beyond the imperishable, I am celebrated in the world and in the Vedas as the Supreme Person (Purushottama).

— Bhagavad Gita 15.18

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