At the end of every cycle the Vedas and all other scriptures disappear. Through the favour of the Self-create, the great Rishis, by mcans of their penances, first re-acquire the lost Vedas and the scriptures.
युगान्तेऽन्तर्हितान् वेदान् सेतिहासान् महर्षयः। लेभिरे तपसा पूर्वमनुज्ञाताः स्वयम्भुवा॥