Brahmacharya is so subtle, understood by the wise. Having understood it, they followed it, instructed by the Kshetrajna. even as
एतदेवेदृशं सूक्ष्मं ब्रह्मचर्यं विदुर्बुधाः। विदित्वा चान्वपद्यन्त क्षेत्रज्ञेनानुदर्शिताः॥