Mukhtasar Sahih Bukhari — Hadith 1071

Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings of Allah be upon him) said: "When a Muslim plants a tree or cultivates a crop, and a bird, a human, or an animal eats from it, it is counted as charity for him equal to what he has given."