Why does miserliness is considered as great sin in Islam?

In Islam, miserliness is considered a great sin because it contradicts the principles of generosity, compassion, and community support that are fundamental to the faith. The Quran and Hadith emphasize the importance of charitable giving (Zakat) and helping those in need, reflecting Allah's mercy and generosity. Miserliness can lead to selfishness and a lack of empathy, which ultimately harms both the individual and society. Thus, practicing generosity is seen as a reflection of one's faith and a means of earning Allah's favor.