Bhagavad Gita, Chapter 10, Verse 15

स्वयमेवात्मनात्मानं वेत्थ त्वं पुरुषोत्तम । भूतभावन भूतेश देवदेव जगत्पते

svayamevātmanātmānaṃ vettha tvaṃ puruṣottama | bhūtabhāvana bhūteśa devadeva jagatpate

Translation

Thou Thyself knowest Thyself as the Self, O Puruṣa Supreme, O Source of beings, O Lord of beings, O God of Gods, O Ruler of the world.

— Alladi Mahadeva Sastri

Word meanings

svayam
(thy) self
eva
only
ātmanā
by (thy) self
ātmānam
(thy) self
vettha
knowest
tvam
thou
puruṣottama
O Puruṣottama
bhūtabhāvana
beings, causest to become, thus
bhūteśa
of beings, O Lord
devadeva
of gods, O God
jagatpate
of the world, O Ruler

Śaṅkarācārya's commentary

Knowest Thyself: as the Lord, as the Īśvara possessed of unsurpassed wisdom, sovereignty and other powers.