Shiva Purana
नादाधारमिदं बिंदुर्बिंद्वाधारमिदं जगत् । जगदाधारभूतौ हि बिंदुनादौ व्यवस्थितौ ८८ ।
Bindu is the support of Nāda.The universe has the support of Bindu. Both Bindu and Nāda together support the entire universe.
english translation
nAdAdhAramidaM biMdurbiMdvAdhAramidaM jagat । jagadAdhArabhUtau hi biMdunAdau vyavasthitau 88 ।
hk transliteration by Sanscript