Anandakanda 1.6.22

1.6.22

athavā tintriṇīkṣārasalilaṃ palamātrakam /
yavakṣārasitākarṣaṃ saṃyojya tridinaṃ pibet //

Or else, combining one pala of water from tamarind ashes
with a karṣa of barley-ash and sugar, one should drink it for three days.