Sahih Bukhari Volume 9, Book 93, Hadith Number 525B.

Narrated By Abu Huraira : Allah’s Apostle said, “If somebody gives in charity something equal to a date from his honestly earned money… for nothing ascends to Allah except good… then Allah will take it in His Right (Hand) and bring it up for its owner as anyone of you brings up a baby horse, till it becomes like a mountain.” Abu Huraira said: The Prophet. said, “Nothing ascends to Allah except good.”