《明史·志·卷五十八》
财产登记役官免死充军的叫做恩军，家庭四口以上给米一石，三口以下给米六斗，没有家口的给米四斗。
籍没免死充军者谓之恩军。家四口以上一石，三口以下六斗，无家口者四斗。
The officials who register property and avoid military service are called Enjun, and households of four or more are given 1 shi of rice, households of three or less are given 6 dou of rice, and households without family members are given 4 dou of rice.