《管子·立政》
制定防火的法令，戒止山泽林薮之处堆积枯草；对自然资源的出产，要按时封禁和开放，以使人民有充足的房屋建筑用材的柴草贮备。这是 虞师 的职责。
修火宪，敬山泽，林薮积草，夫财之所出，以时禁发焉。
To establish rules and regulations on fire prevention, and to prohibit the accumulation of dry grass in mountainous, marshy, or forested areas; to close off or open up the production of natural resources according to a schedule in order to ensure that the people have enough building materials like firewood and timber stocked up.  This is the responsibility of the Yu Shi.