Narrated Anas bin Malik: Allah's Apostle said, "There is none amongst the Muslims who plants a tree or sows seeds, and then a bird, or a person or an animal eats from it, but is regarded as a charitable gift for him."
(Sahih Bukhari, book 39, hadith 513)
The Messenger of Allah (peace be upon him) said, “If any Muslim plants any plant and a human being or an animal eats of it, he will be rewarded as if he had given that much in charity.”
(Sahih Bukhari Vol. 8, Book 73, No. 41)
The Prophet (pbuh) said:"If the Hour is about to be established and one of you was holding a palm shoot, let him take advantage of even one second before the Hour is established to plant it."
(Reported by Ahmad and Al-Bukhan on the authority of Anas in Al Adab Al-Mufrad, see also Sahih Al- Jami' Al-Saghir, No.1424)