即刻俱完 One Word and It Is Done
王子聽言，十分歡喜。隨命大排筵宴，就於本府正堂擺列。噫！一聲旨意，即刻俱完。王子听言，十分欢喜。随命大排筵宴，就于本府正堂摆列。噫！一声旨意，即刻俱完。
逐句解 Line by line
The prince heard this and was greatly pleased.
十分, ten parts out of ten, is the chapter's standard measure of pleasure and this is the fourth time it has been used. The prince is pleased at being refused money, which is a rarer thing than it sounds.
He at once ordered a great banquet laid out, arranged in the main hall of the palace itself.
正堂, the main hall, is where a ruler receives on formal occasions, and it is a marked upgrade: the pilgrims were fed in a garden pavilion this morning. The banquet is the ceremony that makes the teaching arrangement public.
Ah! One word of command, and in a moment the whole thing was done.
噫 is a bare exclamation — the storyteller himself whistling at the speed of it. What follows is a small joke about power: the prince says one word and a full banquet materialises. 旨意 is a ruler's expressed will, the same word used earlier for the order summoning the disciples, and 即刻俱完 means it was complete on the instant.
The narrator interrupts himself with a single exclamation, which is the closest this novel comes to a stage direction. He is impressed, and he wants you to be.
The joke underneath is about what rank actually buys. The prince has just been told his money is no good for the one thing he wants, and here is what his money does buy: a banquet, instantly, from a single word.