Garudapurana 1.213.32

1.213.32

pañca pāde daśaikasminkarayoḥ saptamṛttikāḥ /
ardhaprasṛtimātrā tu prathamā mṛttikā smṛtā //

Five to each foot, ten to one, and seven portions of clay to the hands. / The first portion of clay is remembered to be the measure of half a handful;