And how is a monk content? Just as a bird, wherever it goes, flies with its wings as its only burden; so too is he content with a set of robes to provide for his body and almsfood to provide for his hunger. Wherever he goes, he takes only his barest necessities along. This is how a monk is content.
Samaññaphala Sutta, translated by Thanissaro Bhikkhu
《沙門果經》Ven. Bhikkhu Guõavãra (德雄比丘)