مَّثَلُ الَّذِينَ يُنفِقُونَ أَمْوَالَهُمْ فِي سَبِيلِ اللَّهِ كَمَثَلِ حَبَّةٍ أَنبَتَتْ سَبْعَ سَنَابِلَ فِي كُلِّ سُنبُلَةٍ مِّائَةُ حَبَّةٍ ۗ وَاللَّهُ يُضَاعِفُ لِمَن يَشَاءُ ۗ وَاللَّهُ وَاسِعٌ عَلِيمٌ
The likeness of those
who spend their wealth in the Way of Allâh, is as the likeness of a grain (of
corn); it grows seven ears, and each ear has a hundred grains. Allâh gives
manifold increase to whom He wills. (Surah 2. Al-Baqarah verse 261)
The wisdom of giving Zakah and Sadaqah (voluntary charity) in Islam is to make a Muslim feel bonded to their fellow Muslims by sharing their pain, distress and calamities, which cause the Muslims’ hearts to relent and act kindly toward them, and to donate from what Allah (Exalted be He) has bestowed upon them with a willing heart and soul that is assured with Iman (faith)...
Selected from: Fatwas of Ibn Baz | Part No. 5; Page No. 162| https://alifta.gov.sa/