Qur'an, Al-Isra, Surah 17:26-28
Give to your close relatives what they need, and also give generously to the destitute and to wayfarers. Do not squander your wealth; those who are wasteful are the brothers and sisters of Satan—and Satan is always ungrateful to his Lord. But if, while waiting for the Lord's bounty, you are unable to help your relatives, the destitute and wayfarers, then at least speak kindly to them.