स य एवमेताः शक्वर्यो लोकेषु प्रोता वेद लोकी भवति सर्वमायुरेति ज्योग्जीवति महान्प्रजया पशुभिर्भवति महान्कीर्त्या लोकान्न निन्देत्तद्व्रतम् ॥ २.१७.२ ॥
In plain words
He who knows the Śakvarī verses thus woven upon the worlds comes to possess the worlds, reaches his full span of life, lives long, becomes great in offspring and cattle, great in renown. Let him not speak ill of the worlds: that is the vow.
The commentators
Chāndogyopaniṣadbhāṣyam· bhāṣya
लोकी भवति लोकफलेन युज्यत इत्यर्थः । लोकान्न निन्देत् , तद्व्रतम् ॥
In plain words
He becomes a possessor of worlds—meaning he is united with the fruit of the worlds. Let him never disparage the worlds—that is the sacred vow.
Close to the Sanskrit
He becomes a possessor of worlds; he is joined with the fruit of the worlds, this is the meaning. One should not disparage the worlds; that is the observance.