On Feeding a Fasting Person
The Messenger of Allah (peace be upon him) is reported to have said:
"Allah grants the same reward to the one who gives a fasting person to break the fast a mere date, or a drink of water, or a sip of milk."
"And whoever gave a person who fasted water to drink, Allah shall grant that giver to drink from My fountain, such a drink where after that person shall never again feel thirsty until he enters Jannah." [Hadith-Bahaiqi]