Mahabharata 12.66.10
वेदाध्ययननित्यत्वं क्षमाथाचार्यपूजनम्तथोपाध्यायशुश्रूषा ब्रह्माश्रमपदं भवेत्
vedādhyayananityatvaṃ kṣamāthācāryapūjanamtathopādhyāyaśuśrūṣā brahmāśramapadaṃ bhavet
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book