《元史·本纪·卷七》
二十七日，敕令各路军户中的军奴，除了至元七年以前脱离奴籍编入民户的当差之外，其余的即使脱离了奴籍，仍然令他们帮助本军出力应征。
甲申，敕诸路军户驱丁，除至元七年前从良入民籍者当差，余虽从良，并令助本户军力。
Eryi [March 27]: Ordered the military slaves of all military households around the country to continue providing military service to their families even if their slave status had been removed. Only those who had been enlisted as ordinary households prior to 1271 were exempted.