雞聲三唱 The Cock Crows Thrice
不覺的雞聲三唱。那山坡下孫大聖欠身道：「我這頭疼了一會，到如今也不疼不麻，只是有些作癢。」八戒笑道：「癢便再教他扎一下，何如？」行者啐了一口道：「放放放。」八戒又笑道：「放放放，我師父這一夜倒浪浪浪。」沙僧道：「且莫鬥口。天亮了，快趕早兒捉妖怪去。」行者道：「兄弟，你只管在此守馬，休得動身。豬八戒跟我去。」不觉的鸡声三唱。那山坡下孙大圣欠身道：「我这头疼了一会，到如今也不疼不麻，只是有些作痒。」八戒笑道：「痒便再教他扎一下，何如？」行者啐了一口道：「放放放。」八戒又笑道：「放放放，我师父这一夜倒浪浪浪。」沙僧道：「且莫斗口。天亮了，快赶早儿捉妖怪去。」行者道：「兄弟，你只管在此守马，休得动身。猪八戒跟我去。」
逐句解 Line by line
Before they knew it the cocks had crowed three times.
不覺的 takes 覺 as jué, awareness. The 不 stays bù, 覺 being second tone. Cockcrow, and the plot restarts.
Down below the mountain slope the Great Sage Sun sat up and said, “This head of mine ached a while, but by now it is neither sore nor numb — only it itches a little.”
欠身 is to raise yourself from lying down. Track the symptoms across the chapter: first unbearable pain, then the numbness gone, now only an itch. The novel is keeping a careful clinical record.
Bajie said with a laugh, “If it itches, let her give it another jab. How would that suit?”
再教他扎一下 takes 教 as jiào in its causative use — have her do it again. The 他 is the demon; the pronoun is ungendered in this period.
Pilgrim spat and said, “Away, away, away with you.”
放 here is a curt dismissive of the vernacular, very likely clipped from a much ruder two-character phrase involving wind. 啐了一口 is to spit once, in contempt.
Bajie laughed again and said, “‘Away, away, away’ — and my master, this one night past, astray, astray, astray.”
倒 is the "and yet" adversative dào. Here is the joke: Pilgrim has just thrown 放 at his brother three times, and Bajie throws it back and adds 浪 three times — and 放浪 together is a real word meaning dissolute. He has taken his brother's insult and completed a compound out of it. The pun cannot cross into English, so the translation substitutes a chime of its own, "away" against "astray", to keep the shape of the exchange.
Sha Monk said, “Leave off your bickering. It is light now — let us be away early and catch the fiend.”
鬥口 is to squabble in words. 早兒 takes the curled-tongue ending er. As usual, it is Sha Monk who ends the horseplay and puts the party back to work.
Pilgrim said, “Brother, you are to stay here and mind the horse, and not stir from the spot. Zhu Bajie shall come with me.”
休得 is the fixed vernacular "don't you dare" and takes 得 as dé. The disposition of forces is the standard one: Sha Monk with the horse, Bajie to the fight.
The chapter's most solemn verse is followed, under two hundred characters later, by two brothers calling each other names, and the juxtaposition is entirely typical. Pilgrim reports that his head no longer hurts but itches; Bajie suggests another jab as a cure; Pilgrim spits and tells him to clear off. The novel has just spent two hundred and fifty characters on the retention of the primal yang, and it now spends under thirty on a joke about a scab.
The joke itself is word-play that will not cross into English. Pilgrim's dismissal is 放, thrown three times; Bajie repeats it back and answers with 浪, three times — and 放浪 together is a word meaning unrestrained or dissolute. So Bajie has not merely rhymed. He has built a compound out of his brother's insult and aimed the result at their master's night in the cave. It is a better joke than it looks, and it is also the only moment in the chapter when anybody says aloud that Tripitaka might not have held out.
Underneath the horseplay the plot is being moved into position. The itch is the third stage of the wound and the sign that the poison is working itself out; Sha Monk breaks up the quarrel and points at the daylight; and Pilgrim splits the party, leaving Sha Monk with the horse and taking Bajie with him. The novel nearly always arranges its forces this way before a second engagement — and the attentive reader will note that nothing has yet been found that answers the sting.