四分律行事鈔資持記 2.914

2.914

緣中。第一簡下畜女得吉；又須可淫，簡下黃形石小皆吉。

Under conditions: the first rules out lower female animals, which incurs a duṣkṛta; furthermore, she must be capable of intercourse, ruling out lower pandakas, women with blocked vaginas, or immature girls, all of which incur a duṣkṛta.