Surah Al-Baqarah 2:261

مَّثَلُ ٱلَّذِينَ يُنفِقُونَ أَمْوَٰلَهُمْ فِى سَبِيلِ ٱللَّهِ كَمَثَلِ حَبَّةٍ أَنۢبَتَتْ سَبْعَ سَنَابِلَ فِى كُلِّ سُنۢبُلَةٍ مِّا۟ئَةُ حَبَّةٍ ۗ وَٱللَّهُ يُضَـٰعِفُ لِمَن يَشَآءُ ۗ وَٱللَّهُ وَٰسِعٌ عَلِيمٌ

The example of those who spend their wealth in the way of Allāh is like a seed [of grain] which grows seven spikes; in each spike is a hundred grains. And Allāh multiplies [His reward] for whom He wills. And Allāh is all-Encompassing and Knowing.

Translation: Saheeh International

Tafsir

The likeness of the quality of the expenditure of those who expend their wealth in the way of God that is in obedience of Him is as the likeness of a grain of corn that sprouts seven ears in every ear a hundred grains likewise what they expend will be multiplied seven hundred times; …

Excerpt from Tafsir al-Jalalayn, commentary on 2:261, via Quran.com. The reader has the full commentary and 9 more tafsirs.