Talmud sobre Provérbios 3:28

How so? This teaches that just as a person sees his own money, so should he see his friend’s money. And just as a person does not want people to speak ([badly]) about his finances, so should he not want people to speak (badly) about his friend’s finances.
[Another interpretation of Let your friend’s money be as precious to you as your own:] How so? When a student enters your house (and says: Teach me), if you are able to teach him, teach him; if not, release him immediately, and do not take his money, as it says (Proverbs 3:28), “Do not say, Go, and come back tomorrow, and I will give it to you, when you have it on you.”