क्व तर्हि यजमानस्य लोक इति सयस्तं न विद्यात्कथं कुर्यादथ विद्वान्कुर्यात् ॥
In plain words
Where, then, is the world belonging to the sacrificer? If a person does not know this, how can he perform the sacrifice? Only one who possesses this knowledge should perform it.
Close to the Sanskrit
Where then is the sacrificer's world? He who does not know that, how should he perform? But one who knows should perform.