Mahabharat

siva.sh/mahabharat/vana-parva/197/39

दुर्ज्ञेयः शाश्वतॊ धर्मः स तु सत्ये परतिष्ठितः शरुतिप्रमाणॊ धर्मः सयाद इति वृद्धानुशासनम ।। ३-१९७-३९ ।।

sanskrit

'The eternal virtue is indeed difficult to grasp, but it is fundamentally grounded in truth. The ancients, who are learned in sacred texts, have declared that virtue is based on the authority of the Vedas.' ।। 3-197-39 ।।

english translation

durjJeyaH zAzvatò dharmaH sa tu satye paratiSThitaH zarutipramANò dharmaH sayAda iti vRddhAnuzAsanama || 3-197-39 ||

hk transliteration by Sanscript