a caballo regalado no le mires el diente

/a kaˈbaʎo reɣaˈlado no le ˈmires el ˈdiente/
proverb★Intermediate◆proverb
◆ What It Really Means
Don't question the value or quality of something that is given to you for free.
Literal Meaning
Don't look at the teeth of a gifted horse
Literal Breakdown
a caballoa horse+regaladogiven as a gift+no le miresdon't look at+el dientethe tooth
◇ Mental Image
The mental picture of not scrutinizing a gift, even if it's old or worn out.
◈ When to Use
A friend gives you an old bike. Instead of checking its condition or asking questions, you simply thank them and use it.
◉ Cultural Note
This proverb originates from the idea that when receiving a gift, one should be grateful and not question its value. Checking the teeth of a horse was a way to estimate its age and value.
informal

Don't question the value or quality of something that is given to you for free.

Cuando me dieron el regalo, no le pregunté el precio. ¡A caballo regalado no le mires el diente!

When they gave me the gift, I didn't ask the price. You shouldn't look a gift horse in the mouth!

Diccionario Español-Inglés