गायत्र्! याश्चापि शक्वर्याश्चान्तरे वा व्यवस्थिता । तेन पादप्रमाणेन ध्रुवा कार्याऽवसानिकी ॥ २०॥
And whether the Gāyatrī or the Śakvarī (metres) are arranged in between, the Dhruvā intended for the conclusion should be composed according to the measure of their pādas.
english translation