1001. Narrated Anas bin Maalik (radhi Allaahu anhu) : Allah’s Messenger (Sallallaahu Alaihi Vasallam) 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 an act of charity for him
[Saheeh Al-Bukhaari, Hadeeth No.513, Vol.3]
Source : The Book of Al-Musaaqat – Chapter 2 – Superiority of planting trees and tilling of land. Al-Lulu Wal-Marjan, Compiled by : Fuwad Abdul-Baqi,Translated by : Dr. Muhammad Muhsin Khan
The Encouragement in Islaam to Utilize the Land and to Till the Land (Must Read) – Shaykh al-Albanee
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