《明史·志·卷四十八》
凡狱官，每月更换提牢主事一人，修葺监狱，加固门锁，碱省其酷烈滥施，供给其衣粮。
凡提牢，月更主事一人，修葺囹圄，严固扃钥，省其酷滥，给其衣粮。
For all prison officers, the master of the prison shall be replaced every month to repair the prison, strengthen the locks, reduce its harshness and abuse, and provide food and clothing.