Bhagavad Gita 7.10

बीजं मां सर्वभूतानां विद्धि पार्थ सनातनम्।बुद्धिर्बुद्धिमतामस्मि तेजस्तेजस्विनामहम् ॥७.१०॥

bījaṃ māṃ sarvabhūtānāṃ viddhi pārtha sanātanambuddhirbuddhimatāmasmi tejastejasvināmaham

Know Me, O Arjuna, as the eternal seed of all beings; I am the intelligence of the intelligent, and the splendour of the splendid objects.

गीता