Tā pāi zhe xiōngpú shuō: " Jūnzǐ yìyán, sìmǎ-nánzhuī! "
He thumped his chest and said, "A gentleman never goes back on his word!"
Tips
usage
The second half of 一言既出，驷马难追 or 君子一言，驷马难追, said when making a firm promise: once a word is out, not even a four-horse chariot can catch it.
history
驷 is a team of four horses pulling one chariot, the fastest thing on an ancient road. The idea is already in the 论语: 驷不及舌 "a team of four cannot overtake the tongue".
