Bhashya
स ह उवाच ब्रह्मचारी महात्मनश्चतुर इति द्वितीयाबहुवचनम् ।देव एकः अग्न्यादीन्वायुर्वागादीन्प्राणः ।कःउत्पादियिता वायुरूपेणाधिदैवतमग्न्यादीनाम् ।अध्यात्मं च प्राणरूपेण वागादीनां प्रजानां च जनिता ।अथवा आत्मा देवानामग्निवागादीनां जनिता प्रजानां स्थावरजङ्गमानाम् ।हिरण्यदंष्ट्रः अमृतदंष्ट्रः अभग्नदंष्ट्र इति यावत् ।बभसो भक्षणशीलः ।अनसूरिः सूरिर्मेधावी न सूरिरसूरिस्तत्प्रतिषेधोऽनसूरिः सूरिरेवेत्यर्थः ।महान्तमतिप्रमाणमप्रमेयमस्य प्रजापतेर्महिमानं विभूतिम् आहुर्ब्रह्मविदः ।यस्मात्स्वयमन्यैरनद्यमानः अभक्ष्यमाणः यदन्नमग्निवागादिदेवतारूपम् अत्ति भक्षयतीति ।वा इति निरर्थकः ।वयं हे ब्रह्मचारिन्, आ इदम् एवं यथोक्तलक्षणं ब्रह्म वयमा उपास्महे ।वयमिति व्यवहितेन संबन्धः ।अन्ये न वयमिदमुपास्महे, किं तर्हि ? परमेव ब्रह्म उपास्महे इति वर्णयन्ति ।दत्तास्मै भिक्षामित्यवोचद्धृत्यान् ॥
In plain words
The student said: 'Four of the great one...' This is a plural form in the second case. There is one deity comprising Agni and others, and Vāyu comprising speech and others, namely Prāṇa. Who is the creator acting as Vāyu in the cosmic realm of Agni and others, and as Prāṇa in the inner realm of speech and others, and as the progenitor of all creatures? Alternatively, the Self is the creator of all the deities like Agni, speech, and others, as well as all stationary and moving creatures. He is described as golden-fanged, immortal-fanged, and unbroken-fanged—meaning he is a devourer. 'Anasūri' means one who is not ignorant: 'sūri' is a wise scholar, the opposite is 'asūri', and its negation is 'anasūri', which simply means the wise one. Those who know Brahman speak of the immense and immeasurable majesty of this Prajāpati, because, remaining unconsumed by others, he consumes all food that manifests as Agni, speech, and the other deities. The word 'vā' here is a mere expletive. O student, we meditate upon this very Brahman with the characteristics just described. The pronoun 'vayam' connects across the intervening words. Others do not worship this; rather, they explain that we meditate solely upon the supreme Brahman. With these thoughts, he commanded his servants to give alms to the student.
Close to the Sanskrit
He, the student, spoke thus: 'Four of the great soul...' This is a second case plural form. The deity is one, Agni and others; Vāyu, speech and others, are the breath. Who is the creator as the wind in the cosmic sphere of Agni and others? And in the subjective sphere as breath, of speech and others, and of creatures, the generator. Or else, the Self is the generator of the deities, Agni, speech and others, and of creatures, both stationary and moving. Golden-fanged, immortal-fanged, unbroken-fanged, meaning: devouring in nature. Anasūri means not-ignorant; sūri is learned, not sūri is asūri, and the negation of that is anasūri, meaning just a wise one. Knowers of Brahman speak of the immense, immeasurable majesty and power of this Prajāpati, because, not being eaten by others, he eats and devours food which has the form of deities like Agni and speech. The word 'vā' is meaningless. O student, we thus meditate upon this Brahman having the characteristics stated as above. The word 'vayam' has a connection across a distance. Others do not meditate on this; what then? They describe that we meditate upon the supreme Brahman alone. Give alms to him, he commanded the servants.