Shiva Purana
तदष्टभागः प्रस्थः स्यात्तच्चतुःकुडवं मतम् । दशप्रस्थं शतप्रस्थं सहस्रप्रस्थमेव च १४ ।
The one-eighth portion (aṣṭabhāga) is considered a prastā. The quantities are determined as four (catuḥkudava), ten prastā (daśaprastha), one hundred prastā (śataprastha), and one thousand prastā (sahasraprastha).
english translation
tadaSTabhAgaH prasthaH syAttaccatuHkuDavaM matam । dazaprasthaM zataprasthaM sahasraprasthameva ca 14 ।
hk transliteration by Sanscript