Manusmriti

siva.sh/manusmriti/1/103

विदुषा ब्राह्मणेनैदमध्येतव्यं प्रयत्नतः । शिश्येभ्यश्च प्रवक्तव्यं सम्यङ्नान्येन केन चित् ॥ १०३ ॥

sanskrit

A learned Brahmana must carefully study them, and he must duly instruct his pupils in them, but nobody else (shall do it).

english translation

viduSA brAhmaNenaidamadhyetavyaM prayatnataH | zizyebhyazca pravaktavyaM samyaGnAnyena kena cit || 103 ||

hk transliteration by Sanscript