Shiva Purana
श्रोत्रस्य वाचः शब्दस्य विभोर्व्योम्नस्तथैव च ॥ ईश्वरीमीश्वरस्येमामीशाख्यां हि विदुर्बुधाः ॥ ११ ॥
Scholars understand that the Mūrti Īśāna is the presiding deity of the ear speech, sound and the all-pervasive ether.
english translation
zrotrasya vAcaH zabdasya vibhorvyomnastathaiva ca ॥ IzvarImIzvarasyemAmIzAkhyAM hi vidurbudhAH ॥ 11 ॥
hk transliteration by Sanscript