It is possible to say that this provision was an extension of a land policy taken by the Kamakura bakufu which enhanced the right of kuikaeshi (the right of claim for return) of soryo (heir) and prohibited the donation of land to others, so as to prevent dispersion of Gokenin's shoryo.
これは、御家人の所領の分散を阻止するために、惣領による悔返権の強化や他人和与の禁止を進めてきた鎌倉幕府の土地政策の延長上にあると言える。