Don’t look a gift horse in the mouth

Don’t look a gift horse in the mouth is a proverb, which is a well-known saying that expresses a universally accepted truth. We will explore the meaning of the proverb Don’t look a gift horse in the mouth, its origins and some examples of its use in sentences.Don’t look a gift horse in the mouth […]
from Grammarist
http://grammarist.com/usage/dont-look-a-gift-horse-in-the-mouth/