p. 203
ब्रह्मलोकपर्यन्तानां लोकानां साधनभूतं कर्म विद्वान् ब्रह्मवित् कथं नैति न गच्छति ॥
In plain words
He knows the action that is the means to every world right up to Brahmā's own; he is a knower of Brahman. How, then, does he not go — naiti, that is, he does not proceed there?
Close to the Sanskrit
Knowing the action that is the means of the worlds ending with brahmaloka, the knower of Brahman — how does he not go (naiti), does not proceed?