Never does a Muslim plants a tree except that he has the reward of charity for him, for what is eaten out of that is charity; what is stolen out of that, what the beasts eat out of that, what the birds eat out of that is charity for him. (In short) none incurs a loss to him but it becomes a charity on his part.
قَالَ رَسُولُ اللَّهِ ﷺ مَا مِنْ مُسْلِمٍ يَغْرِسُ غَرْسًا إِلاَّ كَانَ مَا أُكِلَ مِنْهُ لَهُ صَدَقَةٌ وَمَا سُرِقَ مِنْهُ لَهُ صَدَقَةٌ وَمَا أَكَلَ السَّبُعُ مِنْهُ فَهُوَ لَهُ صَدَقَةٌ وَمَا أَكَلَتِ الطَّيْرُ فَهُوَ لَهُ صَدَقَةً وَلاَ يَرْزَؤُهُ أَحَدٌ إِلاَّ كَانَ لَهُ صَدَقَةٌ