摩訶止觀 4.177

4.177

○第四、調五事者，所謂調食、調眠、調身、調息、調心。如前所喻，土水不調，不任為器。五事不善，不得入禪。眠、食兩事，就定外調之；三事，就入、出、住調之。

Section 4: Regulating the five matters. That is, regulating food, regulating sleep, regulating the body, regulating the breath, and regulating the mind. As in the earlier analogy, if earth and water are not regulated, they are not fit to make vessels. If the five matters are not well-adjusted, one cannot enter dhyāna. The two matters of sleep and food are regulated outside of samādhi; the three matters are regulated with respect to entering, exiting, and dwelling.