Charity
مَنْ تَصَدَّقَ بِعَدْلِ تَمْرَةٍ مِنْ كَسْبٍ طَيِّبٍ، وَلَا يَقْبَلُ اللَّهُ إِلَّا الطَّيِّبَ، فَإِنَّ اللَّهَ يَتَقَبَّلُهَا بِيَمِينِهِ ثُمَّ يُرَبِّيهَا لِصَاحِبِهَا كَمَا يُرَبِّي أَحَدُكُمْ فَلُوَّهُ حَتَّى تَكُونَ مِثْلَ الْجَبَلِ
Translation
Whoever gives charity equal to a date from good earnings - and Allah does not accept except what is good - Allah will accept it with His Right Hand, then He will nurture it for its owner, as one of you nurtures his foal, until it becomes like a mountain.
Narrator
Abu Hurairah
Source
Sahih Bukhari & Muslim
Bukhari 1410, Muslim 1014