KENA UPANISHAD · 4/1
सा ब्रह्मेति होवाच ब्रह्मणो वा एतद्विजये महीयध्वमिति ततो हैव विदांचकार ब्रह्मेति ॥
sā brahmeti hovāca brahmaṇo vā etadvijaye mahīyadhvamiti tato haiva vidāṃcakāra brahmeti ॥
She said to him, 'It is the Eternal. Of the Eternal is this victory in which ye shall grow to greatness.' Then alone he came to know that this was the Brahman.
Sri Aurobindo · CWSA 18, p. 10