Anandakanda 1.15.147

1.15.147

dvikarṣamātrā sā śreṣṭhā karṣamātrā tu madhyamā /
ardhakarṣā bhavennīcā pathyā phalamudāhṛtam //

That measuring two karṣas is superior; that measuring one karṣa is middling;
that which is half a karṣa is inferior; thus the fruit of pathyā is declared.