Propina means Tip. Not a piece of good advice, but a tip as in gratuity – the money you give someone in the service industry for doing their job well. Or in some cases, simply because it’s culturally expected. Tipping is generally not required in Spain
In Spain, the word propina is also one of the words used for a child’s allowance, the weekly or bi-weekly stipend a parent will give a kid just for being a kid.