首楞嚴義疏注經 6.416

6.416

比丘依法循乞，不自熟食，為捨貪過，深厭自生，不戀三界，如旅泊人一往而已。

The monk begs in succession according to the Dharma and does not cook food for himself in order to abandon the fault of greed. Deep revulsion arises naturally and he does not crave the three realms, like a traveller on a sojourn making only a single trip.