《黄帝内经·素问·脉要精微论》
脾胃不能藏纳水谷精气而泄利不禁的，是中气失守，肛门不能约束的缘故。
仓廪不藏者，是门户不要也。
If the spleen and stomach cannot store the jingqi of water and grain and cannot stop the diarrhea, it is because the middle qi has lost its control and the anus cannot be restrained.