शब्दतन्मात्रं क्षुभितं वायुः शब्दस् तु अस्य नभसा विरहाभावात्
Transliteration (IAST)
śabdatanmātraṃ kṣubhitaṃ vāyuḥ śabdas tu asya nabhasā virahābhāvāt
The agitated sound-subtle-element is air; and sound is its (quality), because air is never separated from ether.