Agniveshyagrihyasutra 3.6.2.8

3.6.2.8

athaitadabhivānyāyai payo dohayitvā gārhapatye 'bhiviṣyandayitvāhavanīye 'bhiviṣyandayet \

Then, having milked this milk of a cow whose calf is of another mother, having caused it to overflow on the Gārhapatya, he should cause it to overflow on the Āhavanīya.