鬆縛之計 The Loosening of the Bonds
那公主是婦人家水性,見他錯敬,遂回心轉意道:「郎君啊,你若念夫婦的恩愛,可把那沙僧的繩子略放鬆些兒。」老妖聞言,即命小的們把沙僧解了繩子,鎖在那裡。沙僧見解縛鎖住,立起來,心中暗喜道:「古人云:『與人方便,自己方便。』我若不方便了他,他怎肯教把我鬆放鬆放?」那公主是妇人家水性,见他错敬,遂回心转意道:「郎君啊,你若念夫妇的恩爱,可把那沙僧的绳子略放松些儿。」老妖闻言,即命小的们把沙僧解了绳子,锁在那里。沙僧见解缚锁住,立起来,心中暗喜道:「古人云:『与人方便,自己方便。』我若不方便了他,他怎肯教把我松放松放?」
逐句解 Line by line
The princess, being of a woman's yielding nature, saw his contrition and turned her heart about again: "My lord, if you have any regard for the love between husband and wife, you might loosen Sha the Monk's ropes a little."
She forgives him, and the narrator supplies a sour explanation for it. 婦人家水性 — "women being watery by nature" — is a conventional and thoroughly unflattering tag for feminine changeability, and the chapter will apply the same word to a king before it is done. 錯敬 is his overdone, apologetic courtesy; 些兒 takes the suffix 兒 as er. What she actually does with her one moment of leverage is spend it on the man who saved her.
Hearing this, the old fiend at once ordered his underlings to untie Sha the Monk's ropes, and had him locked up there instead.
小的們 are the demon's underlings, the small fry of the cave. The mercy is carefully partial: untied, and then chained. He loosens without letting go.
Finding himself unbound though still chained, Sha the Monk rose to his feet and rejoiced in secret: "As the ancients said, 'Do another a kindness, and you do yourself one.' Had I not obliged her, how would she ever have moved him to loosen my bonds a little?"
And Sha, who acted for nothing, finds he has been paid. 與人方便,自己方便 is a folk maxim — do another a good turn and you do yourself one — and it hinges on 方便, which is worth pausing on. In everyday speech it means convenience, an accommodation, a kindness that costs little. In Buddhist usage it renders upāya, "skilful means" — the doctrine that a teacher shapes the medicine to the patient. The proverb runs on the ordinary sense; the novel is quite aware of the other.
The opening sequence closes on an exchange of favours. Sha shielded the princess expecting nothing, and she, out of gratitude, buys him a small mercy. The proverb makes the moral explicit, and the word it turns on — 方便, kindness, expedient means, a term carrying real Buddhist weight — folds the whole episode into the novel's larger accounting of merit and repayment.
The symmetry is neatly built. The princess's letter saved Tripitaka; Sha's lie saved the princess; the princess's plea eased Sha. Each concealment or mercy produces the next, and the human and the demonic households end up tied together in one chain of obligation.
The tag 水性, fickle, is a stock misogyny of vernacular fiction, but it earns its keep in the plot: it accounts for how quickly she forgives, which the story needs if the demon is to leave for the capital in a good mood.