By the 9th to 10th century the Ritsuryo system had become lax, and the officials of Dazaifu, Kokushi, Gunshi and others started to use shikibunden as principal to accumulate wealth.
律令制が弛緩する9・10世紀になると、大宰府官人、国司、郡司らは職分田を原資の一つとして、富の蓄積を行っていった。