Quran 2:261 — The Heifer (Al-Baqarah)

The example of those who spend their monies in the cause of GOD is that of a grain that produces seven spikes, with a hundred grains in each spike. GOD multiplies this manifold for whomever He wills. GOD is Bounteous, Knower.

[2:260] Abraham said, "My Lord, show me how You revive the dead." He said, "Do you not believe?" He said, "Yes, but I wish to reassure my heart." He said, "Take four birds, study their marks, place a piece of each bird on top of a hill, then call them to you. They will come to you in a hurry. You should know that GOD is Almighty, Most Wise."

[2:262] Those who spend their money in the cause of GOD, then do not follow their charity with insult or harm, will receive their recompense from their Lord; they have nothing to fear, nor will they grieve.