Sell Ones Birthright for a Mess of Pottages因小失大；见利弃义
Sell Ones Birthright for a Mess of Pottages直译是：为了一碗红豆汤而出卖了长子继承权。
《旧约.创世纪》第25章记述了这样一个故事传说：犹太族长以撒的妻子利百加怀孕期间，感觉到2个胎儿在她腹内互相踢打，就去问耶和华，耶和华对她说：两国在你腹内，两族要从你身上出来，这族必强于那族，将来大的要服小的。后来，利百加果然生下一对孪生兄弟，哥哥叫以扫，弟弟叫雅各。两兄弟长大后，以扫好动，常外出打猎；雅各则常在家里帮助料理家务。有一天，以扫打猎回来，又饥又渴，看见弟弟雅各在熬豆汤，就对他说：我饿极了，给我喝点红豆汤吧！雅各说：你要喝汤，就把你的长子权卖给我。以扫说：你都要饿死了，要这长子权有什么用呢？于是，他便按雅各的要求，对天起誓，把长子权卖给雅各，换来饼和红豆汤。以扫吃饱喝足后，起身走了。他哪里想到，为了这碗红豆汤，他的后裔便注定要服事雅各的后裔。
由此，人们用to sell ones birthright for a mess of pottage短语，来比喻to exchange something of lasting value for something that is of value for a short time only;to suffer a big loss for a little gain.这个成语常缩略为for a mess of pottage的形式。有时也可用to sell ones birthrights.
eg:It was argued that joining the Common Market...would be giving away her national rights and advantages for a mess of pottage.
There are many,many people who are willing to prostitute their intelligence for a mess of pottage.