摩訶止觀 8.17

8.17

魔者：若作魔行，是其民屬，故不動亂。若行道出界，去此投彼，十軍攝擒，故深利之惑，欻然而至。如大海水，雖無風流，摩竭吸水，萬物奔趣，不可力拒；專稱佛名，乃得脫耳。若就火為譬者，抖擻如習，風扇如業，膏投如魔。魔、業如下說；觀習動煩惱是今所觀也。

As for Māra: if one performs the actions of Māra, one is his subject, and therefore he does not disturb one. But if one practices the path to escape the realm, leaving this place and going to that, his ten armies will capture and seize one; therefore, delusions that are deep and sharp suddenly arrive. It is like the water of the great ocean: although there is no wind or current, when a makara swallows water, myriad things rush toward it and cannot be resisted by force; only by mindfully reciting the Buddha's name can one escape. If illustrated by fire: shaking is like habit, fanning by the wind is like karma, and throwing on oil is like Māra. Māra and karma are explained below; contemplating habit-activated defilements is what is contemplated now.