《北史·列传·卷七》
他们从早晨商量到中午，还拿不定主意，于是相约不泄露这次秘密，然后散去了。
禧心因缓，自旦达晡，计不能决。遂约不泄而散。
They discussed the matter from morning until noon, but still could not come to a decision, so they agreed not to divulge the secret and then dispersed.