US-P18.024ab संभाव्यो गोचरे शब्दः प्रत्ययो वा न चान्यथा ।US-P18.024cd न संभाव्यौ तदात्मत्वादहंकर्तुस्तथैव च ॥
In plain words
Words and mental concepts find a place within their own field of objects, never elsewhere. Neither can reach the Self, because it is their own innermost Self, and the Self of the ego-agent as well.
Close to the Sanskrit
A word or cognition can apply within its own sphere of objects, and not otherwise. Neither can apply to the Self, because it is their own Self and likewise the Self of the I-maker.