عَنْ سُلَيْمَانَ بْنِ مُوسَى أَنَّ عَبْدَ اللَّهِ بْنَ عَمْرٍو رَضِيَ اللَّهُ عَنْهُمَا كَتَبَ إِلَى عَامِلٍ لَهُ عَلَى أَرْضٍ لَهُ أَنْ لَا تَمْنَعَ فَضْلَ مَاءٍ فَإِنِّي سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ يَقُولُ مَنْ مَنَعَ فَضْلَ الْمَاءِ لِيَمْنَعَ بِهِ الْكَلَأَ مَنَعَ اللَّهُ يَوْمَ الْقِيَامَةِ فَضْلَهُ
Narrated from Sayyiduna Abdullah bin Amr bin al-As (may Allah be pleased with them both), he says: I wrote to one of my land managers not to prevent anyone from excess water, because I heard the Messenger of Allah (peace and blessings of Allah be upon him) say: Whoever withholds excess water in order to withhold grass, Allah Almighty will withhold His bounty from him on the Day of Resurrection.