《管子·七主七臣》
春天不要杀伐，不开掘大丘陵，不焚烧大沼泽，不伐大树，不开大山，不放大火，不杀大臣。不征收谷赋。
春无杀伐，无割大陵，倮大衍，伐大木，斩大山，行大火，诛大臣，收谷赋。
In spring, do not kill or cut down. Do not dig up large hills, do not burn large marshes, do not cut down large trees, do not open up large mountains, do not light large fires, and do not kill government officials. Do not collect grain taxes.