Shloka 18
Adhyāya 26 — Ekākṣara-Brahman (“Om”) and the Hṛdayastha Guru
Inner Teacher
एतदेवेदृशं सूक्ष्मं ब्रह्मचर्य विदुर्बुधा: । विदित्वा चान्वपद्यन्त क्षेत्रज्ञेनानुदर्शिता:
etad evīdṛśaṃ sūkṣmaṃ brahmacaryaṃ vidur budhāḥ | viditvā cānvapadyanta kṣetrajñenānudarśitāḥ ||
賢者たちは、まさにこれこそが微妙なる梵行（ブラフマチャリヤ）の精髄であると知る。これを悟り、さらに「田を知る者」（クシェートラジュニャ）の導きを受けて目覚めた自己知の人々は、その梵行の相を受持し、常にそれに則って生き続ける——揺るぎなくその規律を保つのである。
ब्राह्मण उवाच
Educational Q&A
True brahmacarya is described as a subtle, inward discipline recognized by the wise; when one is instructed by the kṣetrajña (the inner knower/self), one understands its real nature and steadily lives according to it.
A brāhmaṇa speaker is explaining the refined meaning of brahmacarya, emphasizing that awakened, self-knowing persons—after receiving right guidance—undertake and continually maintain this disciplined way of life.