Shiva Purana
दशांगुला वा विहिताः कनिष्ठांगुलिसंमिताः ॥ प्रादेशमात्रा वालाभे होतव्याः सकला अपि ॥ २९ ॥
They are ten fingers long and measure the length of the lower finger Even all the regions should be offered in the valabha.
english translation
dazAMgulA vA vihitAH kaniSThAMgulisaMmitAH ॥ prAdezamAtrA vAlAbhe hotavyAH sakalA api ॥ 29 ॥
hk transliteration by Sanscript