2:261
مَّثَلُ ٱلَّذِينَ يُنفِقُونَ أَمْوَٰلَهُمْ فِى سَبِيلِ ٱللَّهِ كَمَثَلِ حَبَّةٍ أَنۢبَتَتْ سَبْعَ سَنَابِلَ فِى كُلِّ سُنۢبُلَةٍۢ مِّا۟ئَةُ حَبَّةٍۢ ۗ وَٱللَّهُ يُضَٰعِفُ لِمَن يَشَآءُ ۗ وَٱللَّهُ وَٰسِعٌ عَلِيمٌ
The example of those who spend their wealth in the way of Allah is like a seed [of grain] which grows seven spikes; in each spike is a hundred grains. And Allah multiplies [His reward] for whom He wills. And Allah is all-Encompassing and Knowing.
Translation · Saheeh International
Tafsir
Ibn Kathīr (abridged)
Rewards of Spending in Allah's Cause
This is a parable that Allah made of the multiplication of rewards for those who spend in His cause, seeking His pleasure. Allah multiplies the good deed ten to seven hundred times. Allah said,
مَّثَلُ الَّذِينَ يُنفِقُونَ أَمْوَلَهُمْ فِي سَبِيلِ اللَّهِ
(The parable of those who spend their wealth in the way of Allah...)
Sa`id bin Jubayr commented, "Meaning spending in Allah's obedience." Makhul said that the Ayah means, "Spending on Jihad, on horse stalls, weapons and so forth." The parable in the Ayah is more impressive on the heart than merely mentioning the number seven hundred. This Ayah indicates that Allah `grows' the good deeds for its doers, just as He grows the plant for whoever sows it in fertile land. The Sunnah also mentions that the deeds are multiplied up to seven hundred folds. For instance, Imam Ahmad recorded that Abu Mas`ud said that a man once gave away a camel, with its bridle on, in the cause of Allah and the Messenger of Allah ﷺ said,
«لَتَأْتِيَنَّ يَوْمَ الْقِيَامَةِ بِسَبْعِمِائَةِ نَاقَةٍ مَخْطُومَة»