"... Allah , the Last Day, the angels, the Book, and the prophets and gives wealth, in spite of love for it, to relatives, orphans, the needy, the traveler, those who ask [for help], and for freeing slaves; [and who] establishes prayer and gives zakah" [Al-Quran - 2:177]
"They ask you, [O Muhammad], what they should spend. Say, "Whatever you spend of good is [to be] for parents and relatives and orphans and the needy and the traveler. And whatever you do of good - indeed, Allah is Knowing of it." [Al-Quran - 2:215]
"And give to the orphans their properties and do not substitute the defective [of your own] for the good [of theirs]. And do not consume their properties into your own. Indeed, that is ever a great sin." [Al-Quran - 4:2]
Narrated by AbuUmamah: Allah's Messenger (peace be upon him) said, "If anyone strokes an orphan's head, doing so only for Allah's sake, he will have blessings for every hair over which his hand passes; and if anyone treats well an orphan girl or boy under his care, he and I shall be like these two in Paradise," putting two of his fingers together.
Ahmad and Tirmidhi transmitted it, Tirmidhi saying this is a gharib tradition. [Al-Tirmidhi - 4974]