Mīmāmsa Sūtra 01.01.14

प्रयोगस्य परम् ॥१-१-१४॥

prayogasya param ॥1-1-14॥

[प्रयोगस्य (prayogasya) - of application; of usage; परम् (param) - supreme; highest;]

By its (sound's) application, the supreme (or highest) is obtained.