Bhashya
किं च, अन्नेन द्वारभूतेन ब्रह्म विज्ञातं यस्मात्, तस्मात्गुरुमिव अन्नं न निन्द्यात्, तत् अस्य एव ब्रह्मविदो व्रतम्उपदिश्यते ।व्रतोपदेशो अन्नस्तुतये, स्तुतिभाक्त्वं च अन्नस्यब्रह्मोपलब्ध्युपायत्वात् ।प्राणो वा अन्नम्, शरीरान्तर्भावा-त्प्राणस्य ।यन् यस्यान्त प्रतिष्ठितं भवति, तत्तस्यान्नं भवतीति ।शरीरे च प्राण प्रतिष्ठित, तस्मात् प्राणोऽन्नं शरीर-
In plain words
Furthermore, since Brahman is realized through the gateway of food, one must never speak ill of food, treating it with the same reverence as a spiritual teacher. This is prescribed as a sacred vow for the knower of Brahman. This vow is taught to glorify food, which deserves such praise because it serves as the very means to realize Brahman. The vital breath is indeed food, for it is contained within the physical body. Whatever is established within another becomes its food. Since the vital breath is established within the body, the vital breath is food, and the body...
Close to the Sanskrit
Furthermore, because Brahman is known through food serving as a door, therefore one should not speak ill of food, like a teacher; that is prescribed as the vow of this knower of Brahman. The instruction of the vow is for the praise of food, and the worthiness of praise of food is due to its being a means for the attainment of Brahman. The vital breath indeed is food, because of the inclusion of the vital breath within the body. Whatever is established inside another, that becomes the food of that. And in the body, the vital breath is established; therefore, the vital breath is food, the body...