एतेन शब्दाद्यन्तर्धानमुक्तम् ॥

etena śabdādyantardhānamuktam

By this the disappearance or concealment of words which are being spoken and such other things are also explained.

In plain words: In the same way, a yogi can stop his spoken words, and things sensed in other ways, from being heard or noticed by others.