Musannaf Ibn Abi Shaybah

It is narrated from Hazrat Abu Huraira that the Holy Prophet (peace and blessings be upon him) said: Surely Allah Almighty accepts charity and takes it with His right hand and increases it for the giver of charity, just as one of you raises (nurtures) a small child or a young animal, until a morsel of charity (its reward) becomes equal to the mountain of Uhud. And this is also confirmed by the words of Allah Almighty, Allah says that He is the One who accepts repentance from His servants and takes (accepts) their charities. In another place, it is said: Allah destroys usury and increases charities.