The Quran talks about the zakat in more than 30 different verses, mainly in the Medinan suras. In the Quranic view, zakat is a way to redistribute the wealth, thus defining a charity-based economy with a particular interest in the poor and the dispossessed Muslims.
The hadith also admonish those who do not give the zakat. According to the hadith, refusal to pay zakat is a sign of hypocrisy, and God will not accept the prayers of such people. The hadith assert that the poor wouldn't be hungry if the rich gave zakat.