Bhashya
तावान् अस्य गायत्र्याख्यस्य ब्रह्मणः समस्तस्य महिमाविभूतिविस्तारः, यावाश्चतुष्पात्षड्विधश्च ब्रह्मणो विकारःपादो गायत्रीति व्याख्यातः ।अतः तस्माद्विकारलक्षणाद्वायड्याख्याद्वाचारम्भणमात्रात् ततो ज्यायान् महत्तरश्च परमा-र्थसत्यरूपोऽविकारः पूरुषः पुरुषः सर्वपूरणात् पुरि शय-नाच्च ।तस्य अस्य पादः सर्वा सर्वाणि भूतानि तेजोबन्ना-दीनि सस्थावरजङ्गमानि, त्रिपात् त्रयः पादा अस्य सोऽय
In plain words
Such is the vast majesty and splendor of that Brahman known as the Gayatri. The four-footed, six-fold modification of Brahman is what has been explained as a single foot of the Gayatri. Yet beyond that realm of mere name, form, and mutation stands the supreme Purusha—immutable, the absolute truth, who fills all things and dwells within the city of the body. A single foot of this Purusha comprises all beings, from fire, water, and food to every moving and stationary creature. His remaining three feet are immortal and transcendent.
Close to the Sanskrit
So much is this majesty and expansion of divine power of the whole Brahman named as Gayatri, and the four-footed and six-fold modification of Brahman is explained as the foot of Gayatri. Therefore, from that modification characterized as mere speech and origin, greater and higher than that is the immutable Purusha, whose form is ultimate truth, because of filling all and lying in the city. Of this, one foot is all beings, fire, water, food, and others, along with the stationary and moving; three are the three feet of this, that this...