Shiva Purana
युगप्रवृत्त्या च तदा तस्मिंश्च प्रथमे युगे ॥ द्वापरे प्रथमे ब्रह्मन्यदा व्यासः स्वयंप्रभुः ॥५॥
By the initiation of the ages then and in that first age In the first Dvapara, O Brahman, when Vyasa was the self-master.
english translation
yugapravRttyA ca tadA tasmiMzca prathame yuge ॥ dvApare prathame brahmanyadA vyAsaH svayaMprabhuH ॥5॥
hk transliteration by Sanscript