سنن النسائي

Abu Huraiarh said: "The Messenger of Allah (ﷺ) said: None gives charity from (wealth earned from) a good source - and Allah does not accept anything but that which is good - but the Most Merciful takes it in His right hand, even if it is a date, and it tended in the hand of the Most Merciful until it becomes grater than a mountain, just as one of you tends his foal or camel calf."' (Shih)