大毘盧遮那成佛經疏 14.34

14.34

那是空義，乞叉曳是盡義，謂一切除盡也。哆囉，如前是垢等義。准言之，謂食諸障垢也。即以清淨之聲普令流布，所謂無垢聲也。凡如上所說真言，皆以義言稱彼實德，發覺彼而令歡喜也。

"Na" signifies emptiness. "Kṣaye" signifies exhaustion, meaning that everything is removed and exhausted. "Tārā", as before, signifies stain and the like. Interpreted according to the word, it means consuming all obstacles and stains, thereby causing a pure voice to spread everywhere, which is the so-called unstained sound. All mantras spoken as above praise their real virtues with meaningful words, awakening them and bringing them joy.