"Among the best deeds are to feed the poor and the deserving and to greet those whom you know and those whom you do not know"
Sahih Al-Bukhari Hadith No. 826 Book 2
"The best charity is to give people a drink of water"
"Kind speech and forgiveness are better than charity followed by injury. And Allah is free of need and forbearing."
Surah Al Baqarah 2:263
"Verily, it is a good deed to meet your brother with a smiling face"
Sunan At-Tirmidhi 1970
"The upper hand that gives is better than the lower hand that receives"
Sahih Muslim 1033