The Prophet Muhammad (peace be upon him) said: "God. . .will say on the Day of Resurrection: 'O son of Adam, I asked you for food but you did not feed Me.' (The person) will reply: 'My Lord, how could I feed Thee when Thou art the Lord of the worlds?' (God will then) say: 'Didn't you know that a servant of Mine (once) asked you for food, but you did not feed him. And were you not aware that if you had fed him, you would have found him by My side?'"

Sahih Muslim, Hadith 1172

The Prophet also said: "O (my) people! Spread greetings of peace, feed (the poor and needy), behave kindly to your relatives, offer prayer when others are asleep, and (thus) enter Paradise in peace."

Al-Tirmidhi, Hadith 269