Shiva Purana
तत्र श्रुतिसमूहानां विधानं ब्रह्मलक्षणम् ॥ भविष्यति तदा कल्पे कृष्णद्वैपायनो यदा ॥ ५८ ॥
The classification of the Vedas was the characteristic sign of the Kalpa when Kṛṣṇa Dvaipāyana became the chief redactor.
english translation
tatra zrutisamUhAnAM vidhAnaM brahmalakSaNam ॥ bhaviSyati tadA kalpe kRSNadvaipAyano yadA ॥ 58 ॥
hk transliteration by Sanscript