《资治通鉴·唐纪·唐纪六十三》
打个譬喻来说，如果邻居家的牛丢了，跑到自己家里，有人劝这家人的哥哥把牛还给邻居，有人劝他的弟弟把牛留下。
譬如邻人有牛，逸而入于家，或劝其兄归之，或劝其弟攘之。
For example, if a neighbor’s ox gets lost and runs into one’s own home, someone advises the older brother of the family to return the ox to his neighbor, while someone advises his younger brother to keep the ox. 