JB, 1, 201, 4.0 sa yathā praṣṭiṃ praṣṭiyugāya niyuñjyād evam evaitat pūrveṣu stotreṣu ṣoḍaśinam anuniyunakty anirmārgāya //

ṚV, 7, 87, 4.2 vidvān padasya guhyā na vocad yugāya vipra uparāya śikṣan //