Surya Siddhanta
कल्पाद् अस्माच् च मनवः षड् व्यतीताः ससन्धयः। वैवस्वतस्य च *मनोर् युगानाम् त्रिघनो गतः ॥
Out of this present Kalpa six Manus with their Sandhis, and twenty-seven yugas of the seventh Manu called Vaivaswata have passed away.
english translation
kalpAd asmAc ca manavaH SaD vyatItAH sasandhayaH। vaivasvatasya ca *manor yugAnAm trighano gataH ॥
hk transliteration by Sanscript