From Bhagavad Gīta (7.7).
मयि सर्वम् इदं प्रोतं सूत्रे मणिगणा इव
mayi sarvam idaṃ protaṃ sūtre maṇigaṇā iva
On me all this universe is strung like clusters of jewels on a string.
It’s a beautiful line of poetry. A metaphor, of course. Lives inside life.
But perhaps we can even see the string theory on it.