BṚHADĀRAṆYAKA UPANISHAD · 6.4.28

अथास्य मातरम् अभिमन्त्रयते -- इलासि मैत्रावरुणी वीरे वीरम् अजीजनत् ।
सा त्वं वीरवती भव यास्मान् वीरवतो ऽकरद् इति ।
तं वा एतम् आहुः -- अतिपिता बताभूः ।
अतिपितामहो बताभूः ।
परमां बत काष्ठां प्राप श्रिया यशसा ब्रह्मवर्चसेन ।
य एवंविदो ब्राह्मणस्य पुत्रो जायत इति ॥

athāsya mātaram abhimantrayate -- ilāsi maitrāvaruṇī vīre vīram ajījanat ।
sā tvaṃ vīravatī bhava yāsmān vīravato ’karad iti ।
taṃ vā etam āhuḥ -- atipitā batābhūḥ ।
atipitāmaho batābhūḥ ।
paramāṃ bata kāṣṭhāṃ prāpa śriyā yaśasā brahmavarcasena ।
ya evaṃvido brāhmaṇasya putro jāyata iti ॥

Then he addresses the child's mother:-- 'You are Ilâ, of the lineage of Mitra and Varuṅa! O heroine! She has borne a hero!' Continue to be such a woman abounding in heroes-- She who has made us abound in a hero!' Of such a son, verily, they say: 'Ah, you have gone beyond your father! Ah, you have gone beyond your grandfather!' Ah, he reaches the highest pinnacle of splendor, glory, and sacred knowledge who is born as the son of a Brahman who knows this!

Robert Ernest Hume · The Thirteen Principal Upanishads (1921), Bṛhadāraṇyaka VI.4