अथ य एषोऽन्तरे हृत्पुष्कर एवाश्रितोऽन्नमत्ति स एषोऽग्निर्दिवि श्रितः सौरः कालाख्योऽदृश्यः सर्वभूतान्नमत्ति कः पुष्करः किमयं वेद वा व तत्पुष्करं योऽयमाकाशोऽस्येमाश्चतस्रो दिशश्चतस्र उपदिशः संस्था अयमर्वागग्निः परत एतौ प्राणादित्यावेतावुपासीतोमित्यक्षरेण व्याहृतिभिः सावित्र्या चेति ॥५.२ ॥
In plain words
And he who, seated in the lotus of the heart within, eats food — he is that fire set in the sky, of the sun, called time, unseen, who eats all beings as his food. What is the lotus, and of what is it made? The lotus is this space; and its four quarters and four intermediate quarters are its petals. These two, the breath and the sun, move near to one another. Let a man worship these two with the syllable Om, with the utterances, and with the Sāvitrī verse.