Financial impossibility is the reason that underlies many problems of a person. Spending more than you earn or wasting the money puts you into trouble. Therefore we must keep balance of our income and expenses. Expenses shouldn’t exceed the limits of our income.
In Turkish textile materials are usually used in many proverbs (in this case they speak about a “blanket”), the German version talks about a much more figurative element (using the roof as the limit of your growing possibilities) and that the Spanish proverb was related to food (having bread representing the most basic need). In German “Decke” could be the “roof” but also blanket”, and probably the origin of the proverb historically was the same in German and Turkish, in times in “blankets” where fundamental to survive the cold seasons.