Bhashya
पृथिवी हिंकार इत्यादि पूर्ववत् ।शकर्य इति नित्य बहुवचनं रेवत्य इव ।लोकेषु प्रोताः ॥
In plain words
The earth represents the opening hiṅkāra chant, just as explained before. The Śakarī verses invariably take the plural form, exactly like the Revatī verses. They are woven throughout the worlds.
Close to the Sanskrit
The earth is the hiṅkāra and so forth, as before. The Śakarī verses are constantly in the plural form, like the Revatī verses. They are woven into the worlds.