一日為師 One Day A Teacher
行者笑道:「你看師父說的是那裡話,你要吃齋,我自去化。俗語云:『一日為師,終身為父。』豈有為弟子者高坐,教師父去化齋之理?」行者笑道:「你看师父说的是那里话,你要吃斋,我自去化。俗语云:『一日为师,终身为父。』岂有为弟子者高坐,教师父去化斋之理?」
逐句解 Line by line
Pilgrim laughed and said, "Listen to the master — where does talk like that come from? If you want food, I will go and beg it."
Here is the pun. 那裡 was nà lǐ, "over there," twenty-five characters back. It is nǎ lǐ now, the question word later written 哪, and 說的是那裡話 means "what sort of talk is that?" Identical characters, opposite jobs, one speech apart — pointing and asking, sharing a single written form.
"The common saying has it: one day a teacher, a lifetime a father."
一日為師,終身為父 is still in circulation — a Chinese speaker today would recognise it the way an English speaker recognises "spare the rod." 為 is wéi both times, to be or to act as, not wèi, for the sake of. The distinction is the whole sentence: it says a teacher becomes a father, not that you study on his behalf.
"Where is the sense in the disciple sitting up high while the master is packed off to beg?"
教 is jiào, the everyday "make someone do" — the same word as 叫, and nothing to do with teaching, which is the sense it usually carries in this chapter's own vocabulary. 高坐, sitting high, is posture standing in for status.
Pilgrim argues from the rulebook, which is unusual for him. He is normally the one cutting through protocol; here he invokes it, because protocol happens to be on his side. The saying he reaches for is a real one, and using it lets him tell his master to sit down without saying so.
The double reading of the same two characters across two speeches is the sort of thing that vanishes in translation and is right on the surface in Chinese. Tripitaka points at a house with them; Pilgrim throws them back as "what are you talking about?" Nothing marks the change but the sense of the sentence — the writing gives no clue at all.
Worth watching across the chapter: Pilgrim is right, and being right will not help him. He loses this argument on grounds of politeness, and the master walks alone to the door of a spider's cave.