The Book of Transactions (Kitab Al-Buyu`)
Muslim :: Book 10 : Hadith 3767
Jabir b. Abdullah (Allah be pleased with them) reported: Allah's Apostle (may peace be upon him) visited the orchard of Umm Ma'sud and said: Umm Ma'bad. he who has planted this tree, is he a Muslim or a non-Muslim? She said: Of course, he is a Muslim, whereupon he (the Holy Prophet) said: No Muslim who plants (trees) and from their fruits the human beings or the beasts or birds eat, but that would be taken as an act of charity on the Day of Resurrection.