अहं वैश्वानरो भूत्वा प्राणिनां देहमाश्रितः | प्राणापानसमायुक्तः पचाम्यन्नं चतुर्विधम्
ahaṃ vaiśvānaro bhūtvā prāṇināṃ dehamāśritaḥ . prāṇāpānasamāyuktaḥ pacāmyannaṃ caturvidham
我化為「毘濕瓦那羅」（Vaiśvānara，即胃火），安住於眾生體內，與「普拉那」（Prana）和「阿帕那」（Apana）結合，消化四種食物。
Taking the form of Vaisvanara and residing in the bodies of creatures, I, in association with Prana and Apana, digest the four kinds of food.
此節描述了主作為所有生物體內胃火的內在性。「毘濕瓦那羅」（Vaiśvānara）是駐於胃中的火。這火持續不斷地被吸氣和呼氣的風箱所鼓動，消化大量的食物。在胃這個奇妙的實驗室中，我以胃火的形式消化食物。四種食物包括：(1) 咀嚼而食的食物（Bhakshyam）；(2) 吸入的食物（Bhojyam）；(3) 舔食的食物（Lehyam）；(4) 吞嚥的食物（Choshyam）。另一種分類是：(1) 米飯是人類的「地食」（Prithivi-Annam，固體食物）；(2) 水是「水食」（Apyannam，水性食物），如對「查塔卡」（Chataka）鳥而言；(3) 火是「火食」（Tejasannam，熱食），對某些生物而言；(4) 空氣是「風食」（Vayvannam，氣體食物），對蛇而言。《廣林奧義書》（Brihadaranyaka Upanishad 5.9.1）說：「人體內的這團火，消化食物，即是「毘濕瓦那羅」。」凡是思維或冥想，並感覺到「毘濕瓦那羅」火是食者，被火所食的食物是「蘇摩」（Soma，月亮），兩者共同構成「阿耆尼-蘇摩」（Agni-Soma）的人，不會被食物中的雜質所污染。凡在進食前冥想整個世界以食者和被食者的形式由「阿耆尼」和「蘇摩」構成的人，不會被吃壞食物所產生的惡業所玷污。每天進食前重複此節，你將免於食物中所有不潔的玷污。
The immanence of the Lord as the gastric fire in all living beings is described in this verse.Vaisvanara The fire that abides in the stomach. This fire is fanned by the bellows of the incoming and the outgoing breaths continuously and large antities of food are digested. Inside the wonderful laboratory of the stomach I digest the food by taking the form of this gastric fire.Four kinds of food (1) Food which has to be eaten by mastication (Bhakshyam). (2) That which has to be sucked in (Bhojyam). (3) That which has to be licked (Lehyam). (4) That which has to be devoured or swallowed (Choshyam). Another classification is as follows (1) Rice is PrithiviAnnam (solid food) for human beings. (2) Water is Apyannam (watery food) for birds like the Chataka. (3) Fire is Tejasannam (hot food) for certain creatures. (4) Air is Vayvannam (air as food) for serpents.अयमग्निर्वैश्वानरो योऽयमन्तः पुरुषः येनेदमन्नं पच्यते।।This fire which is within man and by which the food is digested is Vaisvanara. (Brihadaranyaka Upanishad 5.9.1)He who thinks or meditates and feels that the Vaisvanara fire is the eater? that the food eaten by the fire is the Soma (moon) and that the two together form AgniSoma is not contaminated by the impurities in the food. He who meditates before he takes his food that the whole world which is in the form of eater and eaten is made up of Agni and Soma? is not tainted by the evil arising from eating bad food.Repeat this verse daily before you take your food. You will be free from all taints of impurity in food.