Don't look a gift horse in the mouth

Cultural  

1. Don't question the value of a gift. The proverb refers to the practice of evaluating the age of a horse by looking at its teeth. This practice is also the source of the expression “long in the tooth,” meaning old.

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Example Sentences

Trumble pointed to the famous expression "don't look a gift horse in the mouth" as proof that people have always suspected a connection between health and examining an animal's teeth.

From Salon

But in the spirit of “Don’t look a gift horse in the mouth,” let’s just ask Fauci to whisper to D.C.

From Washington Post

Don’t look a gift horse in the mouth — and then post about it on social media.

From Fox News

Whoever came up with the phrase, “don’t look a gift horse in the mouth” surely was thinking of something akin to the offer that Missouri officials are now weighing.

From Washington Times

Re: Gifts: Whatever happened to the saying, “Don’t look a gift horse in the mouth”? If someone gives you a gift, just say thank you.

From Washington Post