مَثَلُ الَّذِينَ يُنفِقُونَ اَموَالَهُم فِى سَبِيلِ اللّٰهِ كَمَثَلِ حَبَّةٍ اَنبَتَت سَبعَ سَنَابِلَ فِى كُلِّ سُنبُلَةٍ مِّائَةُ حَبَّةٍ‌ؕ وَاللّٰهُ يُضٰعِفُ لِمَن يَّشَآءُ‌ ؕ وَاللّٰهُ وَاسِعٌ عَلِيمٌ﴿۲۶۱﴾‏

The wealth spent in the way of Allah is like a seed which grows seven spikes and each spike contains hundred grains and Allah weakens to whom ever He wills and Allah is wide and knowledgeable (Al-Quran, 261)