CHAPTER: On The Excellence Of Supplying Drinking Water.
Saeed reported Saad came to the Prophet صلی اللہ علیہ وسلم and asked him Which sadaqah do you like most? He replied Water.
The above mentioned tradition has also been narrated by Saad bin Ubadah from the Prophet صلی اللہ علیہ وسلم in the same manner.
Narrated Saad ibn Ubadah: Saad asked: Messenger of Allah, Umm Saad has died; what form of sadaqah is best? He replied: Water (is best). He dug a well and said: It is for Umm Saad.
Narrated Abu Saeed (al-Khudri): The Prophet صلی اللہ علیہ وسلم said: If any Muslim clothes a Muslim when he is naked, Allah will clothe him with some green garments of Paradise; if any Muslim feeds a Muslim when he is hungry, Allah will feed him with some of the fruits of Paradise; and if any Muslim gives a Muslim drink when he is thirsty, Allah will give him some of the pure wine which is sealed to drink.