Shloka 253
Adhyāya 42 — Mahābhūta–Indriya–Adhyātma-Vyavasthā
Brahmā’s Instruction on Elements and Faculties
अधिकभूतं विसर्गश्न मित्रस्तत्राधिदेवतम् निम्न गतिवाला अपान एवं गुदा अध्यात्म कहा गया है और मलत्याग उसका अधिभूत तथा मित्र उसके अधिदेवता हैं
adhikabhūtaṃ visargaś ca mitras tatrādhidevatam | nimnagativālā apāna evaṃ gudā adhyātma ucyate ca | malatyāgaḥ tad adhikabhūtaṃ mitras tasyādhidevatā ||
风神说道：“就此作用而言，外泄之排出（粪秽之出）为其‘依物’（adhibhūta，粗显之身相），而密多罗（Mitra）为其‘依神’（adhidevatā，主宰之神）。向下运行之气名为阿波那（Apāna），其内在之座（adhyātma）被说为肛门。故排除秽物乃形体之显现，而密多罗则为守护此秩序之神。”
वायुदेव उवाच
Educational Q&A
The verse maps a bodily function to a threefold framework: the physical act (adhibhūta), the presiding divine principle (adhidevatā), and the inner seat in the body-mind system (adhyātma). It teaches that even ordinary physiological processes are governed by cosmic order and should be understood with reverence and discipline.
Vāyu-deva is explaining a doctrinal classification of vital functions, identifying Apāna as the downward-moving life-current, locating its adhyātma seat in the guda (anus), and naming Mitra as the adhidevatā connected with the regulation of this eliminative process.