Mahabharata 13.27.34

वर्णाश्रमा यथा सर्वे स्वधर्मज्ञानवर्जिताःक्रतवश्च यथासोमास्तथा गङ्गां विना जगत्

varṇāśramā yathā sarve svadharmajñānavarjitāḥkratavaśca yathāsomāstathā gaṅgāṃ vinā jagat

Our plain-language meaning of this verse is waiting for scholar review.