Sahih al-Bukhari 1410
صحيح البخاري#1410SahihNarrated Abu Huraira:Allah's Messenger (ﷺ) said, "If one gives in charity what equals one date-fruit from the honestly earned money and Allah accepts only the honestly earned money --Allah takes it in His right (hand) and then enlarges its reward for that person (who has given it), as anyone of you brings up his baby horse, so much so that it becomes as big as a mountain
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 24:14